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Airline Louvers, a Mestek company Louvers
 
         
SECTION 08 91 00
 
         
LOUVERS
 
         
 
         
Copyright 2018 - 2019 ARCAT, Inc. - All rights reserved

          ** NOTE TO SPECIFIER ** Airline Louvers, a Mestek company; louvers.
This section is based on the products of Airline Louvers, a Mestek company, which is located at:
1020 Prince Frederick Blvd. Suite 305
Prince Frederick, MD 20678
Tel: 570-420-7079
Fax: 570-420-7078
Email: request info
Web: http://info.mcdlg-hvac.com/airlinelouvers
[ Click Here ] for additional information.
Airline Louvers, a Mestek Company, provides a wide range of louvers for any situation: architectural additions, vision screens, rooftop installations, and storm ready protection. Our people have the experience and knowledge to help you make the right decision. Choose Airline Louvers, a Mestek Company for your next project.
 
          PART 1GENERAL
 
          1.1SECTION INCLUDES
          ** NOTE TO SPECIFIER ** Delete items below not required for project.
 
          A.Louvers and accessories including the following:
          1.Fixed, extruded-aluminum louvers.
          2.Fixed, formed-metal louvers.
          3.Fixed, acoustical louvers.
          4.Operable, extruded-aluminum louvers.
          5.Operable, formed-metal louvers.
          6.Operable, extruded-aluminum insulated louvers.
          7.Operable, formed-metal insulated louvers.
          8.Louver screens.
          9.Blank-off panels.
 
          1.2RELATED SECTIONS
          ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
          A.Section 08 11 00 - Metal Doors and Frames.
 
          B.Section 09 90 00 - Painting and Coating.
 
          1.3REFERENCES
          ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
          A.ASTM International (ASTM):
          1.ASTM A 653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process
          2.ASTM A 780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings
          3.ASTM B 209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate
          4.ASTM B 221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
          5.ASTM E 90 - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements.
          6.ASTM E 413 - Classification for Rating Sound Insulation.
          7.ASTM E 966 - Standard Guide for Field Measurements of Airborne Sound Attenuation of Building Facades and Facade Elements.
          8.ASTM E 1332 - Standard Classification for Rating Outdoor-Indoor Sound Attenuation.
 
          B.American Architectural Manufacturers Association (AAMA):
          1.AAMA 611 - Voluntary Specification for Anodized Architectural Aluminum.
          2.AAMA 2603 - Voluntary Specification, Performance Requirements and Test Procedures for Pigmented Organic Coatings on Aluminum Extrusions and Panels.
          3.AAMA 2604 - Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Aluminum Extrusions and Panels.
          4.AAMA 2605 - Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels.
 
          C.Air Movement and Control Association International, Inc. (AMCA):
          1.AMCA 500-L - Laboratory Methods of Testing Louvers for Rating.
          2.AMCA 501 - Louver Application Manual and Design Guide.
 
          D.Sheet Metal & Air Conditioning Contractors' National Association (SMACNA):
          1.SMACNA - Architectural Sheet Metal Manual.
 
          1.4DEFINITIONS
 
          A.Louver Terminology: Definitions of terms for metal louvers contained in AMCA 501 apply to this Section unless otherwise defined in this Section or in referenced standards.
 
          B.Horizontal Louver: Louver with horizontal blades (i.e., the axes of the blades are horizontal).
 
          C.Vertical Louver: Louver with vertical blades (i.e., the axes of the blades are vertical).
 
          D.Drainable-Blade Louver: Louver with blades having gutters that collect water and drain it to channels in jambs and mullions, which carry it to bottom of unit and away from opening.
 
          E.Wind-Driven-Rain-Resistant Louver: Louver that provides specified wind-driven rain performance, as determined by testing according to AMCA 500-L.
 
          1.5SUBMITTALS
 
          A.Submit under provisions of Section 01 30 00 - Administrative Requirements.
 
          B.Product Data:
          1.Manufacturer's data sheets on each product to be used.
          2.Preparation instructions and recommendations.
          3.Storage and handling requirements and recommendations.
          4.Typical installation methods.
 
          C.Shop Drawings: Include details of materials, construction and finish. Include relationship with adjacent construction.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          D.Delegated Design Submittal: For louvers indicated to comply with structural performance requirements, including analysis provided by manufacturer.
 
          E.Product Test Reports: Based on evaluation of comprehensive tests performed according to AMCA 500-L by a qualified testing agency or by manufacturer and witnessed by a qualified testing agency, for each type of louver and showing compliance with performance requirements specified. Louver shall be licensed to bear the AMCA certified ratings seal.
 
          1.6QUALITY ASSURANCE
 
          A.Manufacturer Qualifications: Company specializing in manufacturing products specified in this section with a minimum five years documented experience.
 
          B.Source Limitations: Provide each type of product from a single manufacturing source to ensure uniformity.
 
          1.7DELIVERY, STORAGE, AND HANDLING
 
          A.Store and handle in strict compliance with manufacturer's written instructions and recommendations.
 
          B.Protect from damage due to weather, excessive temperature, and construction operations.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
 
          A.Acceptable Manufacturer: Airline Louvers, a Mestek company, which is located at: 1020 Prince Frederick Blvd. Suite 305; Prince Frederick, MD 20678; Tel: 570-420-7079; Fax: 570-420-7078; Email: request info; Web: http://info.mcdlg-hvac.com/airlinelouvers
          ** NOTE TO SPECIFIER ** Delete two of the following three paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
          B.Substitutions: Not permitted.
 
          C.Substitutions: Subject to approval products manufactured by Air Balance, Arrow United Industries, Cesco Products, and Louvers and Dampers will be acceptable.
 
          D.Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
 
          2.2PERFORMANCE REQUIREMENTS
          ** NOTE TO SPECIFIER ** Delete Delegated Design if not required.
 
          A.Delegated Design: Design louvers, including comprehensive engineering analysis by a qualified professional engineer, using structural performance requirements and design criteria indicated.
 
          B.Structural Performance: Louvers shall withstand the effects of gravity loads and the following loads and stresses within limits and under conditions indicated without permanent deformation of louver components, noise or metal fatigue caused by louver-blade rattle or flutter, or permanent damage to fasteners and anchors. Wind pressures shall be considered to act normal to the face of the building:
          ** NOTE TO SPECIFIER ** Select one of the three wind loads subparagraphs below. Delete options not required.
          1.Wind Loads: Determine loads based on pressures as indicated on Drawings.
          2.Wind Loads: Determine loads based on a uniform pressure of 20 lbf/sq. ft. (957 Pa), acting inward or outward.
          3.Wind Loads: Determine loads based on pressures indicated below:
          a.Corner Zone: Within ____ feet of building corners, uniform pressure of _____, acting inward, and _____, acting outward.
          b.Other Than Corner Zone: Uniform pressure of _____, acting inward, and _____, acting outward.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          C.Windborne-Debris-Impact Resistance: Louvers located within 30 feet (9.1 m) of grade shall pass large-missile testing requirements in ASTM E 1996, when tested according to ASTM E 1886. Test specimens shall be no smaller in width and length than louvers indicated for use on Project.
          ** NOTE TO SPECIFIER ** Enhanced protection applies to essential facilities. Delete protection level not required.
          1.Protection level: Basic.
          2.Protection level: Enhanced.
          ** NOTE TO SPECIFIER ** Wind Zone regions are defined by the IBC. Delete zones not required.
          3.Wind Zone: 1.
          4.Wind Zone: 2.
          5.Wind Zone: 3
          6.Wind Zone: 4
          ** NOTE TO SPECIFIER ** Component Importance Factor is generally 1.0 unless the structure is in Seismic Use Group III and louver is necessary for continued operation of facility or failure of louver could impair continued operation of facility, in which case the Component Importance Factor is 1.5. Delete factor not required.
          7.Component Importance Factor: 1.0.
          8.Component Importance Factor: 1.5.
          ** NOTE TO SPECIFIER ** Delete if louvers are sufficiently oversized that performance is not critical.
 
          D.Louver Performance Ratings: Provide louvers complying with requirements specified, as demonstrated by testing manufacturer's stock units identical to those provided, except for length and width according to AMCA 500-L.
          ** NOTE TO SPECIFIER ** Thermal Movements requirement may not be needed for most louvers, but should be retained for continuous louver assemblies. Delete if not required.
 
          E.Thermal Movements: Allow for thermal movements from ambient and surface temperature changes.
          1.Temperature Change (Range): 120 degrees F (67 degrees C), ambient; 180 degrees F (100 degrees C), material surfaces.
 
          F.SMACNA Standard: Comply with recommendations in SMACNA's "Architectural Sheet Metal Manual" for fabrication, construction details, and installation procedures.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          G.UL and NEMA Compliance: Provide motors and related components for motor-operated louvers that are listed and labeled by UL and comply with applicable NEMA standards.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.3FIXED, EXTRUDED-ALUMINUM LOUVERS
          ** NOTE TO SPECIFIER ** Delete product types not required.
 
          A.Horizontal, Non-Drainable-Blade Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AS15B30H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 1.5 inches (38 mm).
          b.Blade Profile: Non-Drainable blade with center baffle.
          c.Blade Spacing: 1.5 inches (38 mm).
          d.Blade Angle: 30 degrees.
          e.Free Area: 7.37 sq ft (0.68 sq m ) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: Intake 0.14 inch wg (35 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity. Exhaust .153 in. w.g. at 1000 fpm (5.1 m per sec).
          g.Point of Beginning Water Penetration: 459 fpm (2.3 m per sec).
          2.Basis of Design: Model AS2B45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 2 inches (50 mm).
          b.Blade Profile: Non-Drainable blade with center baffle.
          c.Blade Spacing: 2.75 inches (70 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 7.23 sq ft (0.67 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.15 inch wg (37 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 748 fpm (3.8 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          3.Basis of Design: Model AS4S45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 9.09 sq ft (0.84 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.16 inch wg (40 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 886 fpm (4.5 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          4.Basis of Design: Model AS4B45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Non-Drainable blade with center baffle.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 9.02 sq ft (0.84 sq m ) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.145 inch wg (36 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 932 fpm (4.7 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          5.Basis of Design: Model AS4S37H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 3.5 inches (89 mm).
          d.Blade Angle: 37 degrees.
          e.Free Area: 9.16 sq ft (0.85 sqm) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.121 inch wg (30 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 876 fpm (4.5 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          6.Basis of Design: Model AS4B30H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 3 inches (76 mm).
          d.Blade Angle: 30 degrees.
          e.Free Area: 7.66 sq ft (0.71 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: Intake 0.108 inch wg (27 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity. Exhaust 0.121 inch wg at 1000 fpm (5.1 m per sec).
          g.Point of Beginning Water Penetration: 763 fpm (3.9 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          7.Basis of Design: Model AS6B45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Non-Drainable blade with center baffle.
          c.Blade Spacing: 5.375 inches (137 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 8.73 sq ft (0.81 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.13 inch wg (32 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1093 fpm (5.6 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          8.Basis of Design: Model AS1S30H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 0.465 inches (11.8 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 0.775 inches (19.7 mm).
          d.Blade Angle: 30 degrees.
          e.Free Area: 11.5 sq ft (1.07 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          f.Continuous line.
          9.Basis of Design: Model AS1S42H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 0.465 inches (11.8 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 0.775 inches (19.7 mm).
          d.Blade Angle: 42 degrees.
          e.Free Area: 9.68 sq ft (0.899 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          f.Continuous line.
          ** NOTE TO SPECIFIER ** Delete thickness not required.
          10.Frame and Blade Nominal Thickness: Not less than 0.080 inch (2.03 mm) for blades and frames.
          11.Frame and Blade Nominal Thickness: Not less than 0.060 inch (1.52 mm) for blades and 0.080 inch (2.03 mm) for frames.
          ** NOTE TO SPECIFIER ** Delete mullion types not required.
          12.Mullion Type: Exposed.
          13.Mullion Type: Semi-recessed.
          14.Mullion Type: Fully recessed.
 
          B.Horizontal, Drainable-Blade Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AS2D45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 2 inches (50 mm).
          b.Blade Profile: Drainable blade with center baffle.
          c.Blade Spacing: 2.75 inches (70 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 7.23 sq ft (0.67 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.12 inch wg (30 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 901 fpm (4.6 m per sec).
          2.Basis of Design: Model AS4D37H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Drainable blade.
          c.Blade Spacing: 3.5 inches (89 mm).
          d.Blade Angle: 37 degrees.
          e.Free Area: 9.07 sq ft (0.84 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.136 inch wg (34 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 868 fpm (4.4 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          3.Basis of Design: Model AS4DD45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Drainable blade with center baffle.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 8.37 sq ft (0.78 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.138 inch wg (34 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 942 fpm (4.8 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          4.Basis of Design: Model AS4D45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Drainable blade with center baffle.
          c.Blade Spacing: 5 inches (127 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 8.16 sq ft (0.76 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.19 inch wg (47 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1021 fpm (5.2 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          5.Basis of Design: Model AS5D99H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 5 inches (127 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 2.25 inches (57 mm).
          d.Free Area: 7.73 sq ft (0.72 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.208 inch wg (52 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: 1141 fpm (5.8 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          g.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          6.Basis of Design: Model AS6D37H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Drainable blade with center baffle.
          c.Blade Spacing: 4.5 inches (114 mm).
          d.Blade Angle: 35 to 42 degrees.
          e.Free Area: 8.97 sq ft (0.83 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.12 inch wg (30 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: Minimum 1250 fpm (6.4 m per sec).
          7.Basis of Design: Model AS6DD35H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Drainable blade with center baffle.
          c.Blade Spacing: 4.5 inches (114 mm).
          d.Blade Angle: 35 to 42 degrees.
          e.Free Area: 8.91 sq ft (0.83 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.12 inch wg (30 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 993 fpm (5.04 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          8.Basis of Design: Model AS4D37HP; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Drainable blade with center baffle.
          c.Blade Spacing: 3 inches (76 mm).
          d.Blade Angle: 35 degrees.
          e.Free Area: 9.63 sq ft (0.89 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.13 inch wg (32 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 909 fpm (4.6 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          9.Basis of Design: Model AS6D37HP; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (152 mm).
          b.Blade Profile: Drainable blade.
          c.Blade Spacing: 4 inches (100 mm).
          d.Free Area: 10.06 sq ft (0.93 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.13 inch wg (32 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: 1103 fpm (5.6 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          g.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          10.Basis of Design: Model EA-22; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Dual Drainable blade with center baffle.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 8.37 sq ft (0.78 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.15 inch wg (37 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1075 fpm (5.5 m per sec).
          11.Basis of Design: Model EA-64; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (152 mm).
          b.Blade Profile: Drainable blade.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: 37.5 degrees.
          e.Free Area: 9.24 sq ft (0.86 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.14 inch wg (35 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: Minimum 1250 fpm (6.4 m per sec).
          ** NOTE TO SPECIFIER ** Delete thickness not required.
          12.Frame and Blade Nominal Thickness: Not less than 0.080 inch (2.03 mm) for blades and frames.
          13.Frame and Blade Nominal Thickness: Not less than 0.060 inch (1.52 mm) for blades and 0.080 inch (2.03 mm) for frames.
          ** NOTE TO SPECIFIER ** Delete mullion types not required.
          14.Mullion Type: Exposed.
          15.Mullion Type: Semi-recessed.
          16.Mullion Type: Fully recessed.
          ** NOTE TO SPECIFIER ** Delete if not required.
          17.AMCA Seal: Mark units with AMCA Certified Ratings Seal.
 
          C.Horizontal, Continuous-Line, Drainable-Blade Louver:
          1.Basis of Design: Model AS6DD45H; as manufactured by Airline Louvers, a Mestek Company.
          2.Louver Depth: 6 inches (150 mm).
          ** NOTE TO SPECIFIER ** If project has specific blade spacing or angle requirements indicate them below. Delete if not required.
          3.Blade Spacing: 5.375 inches (137 mm).
          4.Blade Angle: 45 degrees.
          5.Frame and Blade Nominal Thickness: Not less than 0.080 inch (2.03 mm) for blades and frames.
          6.Free Area: 8.4 sq ft (0.78 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          7.Pressure Drop: Not more than 0.14 inch wg (35 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          8.Point of Beginning Water Penetration: Not less than 1100 fpm (5.6 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          9.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
 
          D.Horizontal, Wind-Driven-Rain-Resistant Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AS2D99HS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 2 inches (50 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 1 inches (25 mm).
          d.Free Area: 6.93 sq ft (0.64 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.38 inch wg (95 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          2.Basis of Design: Model AS4D99HS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 1.625 inches (41 mm).
          d.Free Area: 7.50 sq ft (0.70 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.26 inch wg (65 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          3.Basis of Design: Model AS5D99HS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 5 inches (127 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 2 inches (52 mm).
          d.Free Area: 7.08 sq ft (0.66 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.32 inch wg (80 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: Minimum 1250 fpm (6.4 m per sec).
          4.Basis of Design: Model AS6S37HS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (152 mm).
          b.Blade Profile: Straight/Chevron.
          c.Blade Spacing: 3.5 inches (89 mm).
          d.Free Area: 7.07 sq ft (0.66 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.16 inch wg (40 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          f.Continuous line.
          5.Basis of Design: Model AS7D99HS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 7 inches (178 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 2.25 inches (57 mm).
          d.Free Area: 7.22 sq ft (0.67 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.34 inch wg (85 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: 1187 fpm (6.0 m per sec).
          6.Basis of Design: Model AS8D99HS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 8 inches (203 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 2.25 inches (57 mm).
          d.Free Area: 9.01 sq ft (0.84 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.48 inch wg (120 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          7.Basis of Design: Model EA-52; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 5 inches (127 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 2 inches (52 mm).
          d.Free Area: 7.08 sq ft (0.66 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.31 inch wg (76.8 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: Minimum 1250 fpm (6.4 m per sec).
          8.Frame and Blade Nominal Thickness: Not less than 0.080 inch (2.03 mm) for blades and frames.
          ** NOTE TO SPECIFIER ** Delete wind driven rain performance requirements not required.
          9.Wind Driven Rain Performance:
          a.Effectiveness: Not less than 99 percent.
          b.Effectiveness: Not less than 95 percent.
          c.Effectiveness: Not less than 80 percent.
          d.Effectiveness: Not less than _____ percent.
          e.Rainfall Rate and Wind Speed: 3 inches (75 mm) per hour and 29 mph (13 m per sec).
          f.Rainfall Rate and Wind Speed: 8 inches (200 mm) per hour and 50 mph (22.4 m per sec).
          g.Core-Area Intake Velocity: 300 fpm (1.5 m per sec).
          h.Core-Area Intake Velocity: 400 fpm (2.0 m per sec).
          i.Core-Area Intake Velocity: 500 fpm (2.5 m per sec).
          ** NOTE TO SPECIFIER ** Delete if not required.
          10.AMCA Seal: Mark units with AMCA Certified Ratings Seal.
 
          E.Vertical, Wind-Driven-Rain-Resistant Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AS3D99VS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 3 inches (76 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 0.8125 inches (21 mm).
          d.Free Area: 7.06 sq ft (0.66 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.083 inch wg (21 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          2.Basis of Design: Model AS4D99VS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 1.625 inches (41 mm).
          d.Free Area: 7.58 sq ft (0.70 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.26 inch wg (65 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          3.Basis of Design: Model AS6D99VS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 1.625 inches (41 mm).
          d.Free Area: 8.51 sq ft (0.79 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.103 inch wg (26 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: Minimum 1250 fpm (6.4 m per sec).
          4.Basis of Design: Model AS8D99VS; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 8 inches (200 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 1.25 inches (32 mm).
          d.Free Area: 4.41 sq ft (0.41 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.13 inch wg (32 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          5.Basis of Design: Model EAV-66; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 1.625 inches (41 mm).
          d.Free Area: 7.85 sq ft (0.73 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.103 inch wg (26 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          f.Continuous line.
          6.Basis of Design: Model EAV-81; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 8 inches (200 mm).
          b.Blade Profile: Chevron.
          c.Blade Spacing: 1.25 inches (32 mm).
          d.Free Area: 4.69 sq ft (0.44 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.19 inch wg (47 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          7.Frame and Blade Nominal Thickness: Not less than 0.080 inch (2.03 mm) for blades and frames.
          ** NOTE TO SPECIFIER ** Delete wind driven rain performance requirements not required.
          8.Wind Driven Rain Performance:
          a.Effectiveness: Not less than 99 percent.
          b.Rainfall Rate and Wind Speed: 3 inches (75 mm) per hour and 29 mph (13 m per sec).
          c.Rainfall Rate and Wind Speed: 8 inches (200 mm) per hour and 50 mph (22.4 m per sec).
          d.Core-Area Intake Velocity: 300 fpm (1.5 m per sec).
          e.Core-Area Intake Velocity: 400 fpm (2.0 m per sec).
          f.Core-Area Intake Velocity: 500 fpm (2.5 m per sec).
          ** NOTE TO SPECIFIER ** Delete if not required.
          9.AMCA Seal: Mark units with AMCA Certified Ratings Seal.
 
          F.Horizontal, Sight-Proof, Drainable-Blade Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AS4Y99H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Inverted Y.
          c.Blade Spacing: 3 inches (76 mm).
          d.Free Area: 5.98 sq ft (0.56 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.36 inch wg (90 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: 920 fpm (4.7 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          g.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          2.Basis of Design: Model AS4V99H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Chevron.
          c.Blade Angle: 70 degrees
          d.Blade Spacing: 3 inches (76 mm).
          e.Free Area: 6.22 sq ft (0.58 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.50 inch wg (125 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 789 fpm (4.0 m per sec).
          3.Basis of Design: Model AS2Y99H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 2 inches (50 mm).
          b.Blade Profile: Inverted Y.
          c.Blade Spacing: 1.75 inches (44 mm).
          d.Free Area: 4.43 sq ft (0.41 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.40 inch wg (100 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: 924 fpm (4.7 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          g.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          4.Frame and Blade Nominal Thickness: Not less than 0.080 inch (2.03 mm) for blades and frames.
          5.Mullion Type: Exposed.
 
          G.Vertical, Sight-Proof, Drainable-Blade Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AS4V99V; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Chevron.
          c.Blade Angle: 70 degrees.
          d.Blade Spacing: 3 inches (76 mm).
          e.Free Area: 6.22 sq ft (0.58 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.50 inch wg (125 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 848 fpm (4.3 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          2.Basis of Design: Model AS4Y99V; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Inverted Y.
          c.Blade Spacing: 3 inches (76 mm).
          d.Free Area: 5.98 sq ft (0.56 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          e.Pressure Drop: 0.35 inch wg (87 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          f.Point of Beginning Water Penetration: 984 fpm (5.0 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          g.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          3.Frame and Blade Nominal Thickness: Not less than 0.080 inch (2.03 mm) for blades and frames.
          4.Mullion Type: Exposed.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.4FIXED, FORMED-METAL LOUVERS
          ** NOTE TO SPECIFIER ** Delete product types not required.
 
          A.Horizontal, Non-Drainable-Blade Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model GS2S45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 2 inches (50 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 2.125 inches (54 mm).
          d.Blade Angle: 45 degrees.
          2.Basis of Design: Model GS4S45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 4.125 inches (105 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 8.11 sq ft (0.75 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.185 inch wg (46 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 614 fpm (3.1 m per sec).
          3.Basis of Design: Model GS6S45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 6.5625 inches (167 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 7.41 sq ft (0.69 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          f.Continuous line.
          ** NOTE TO SPECIFIER ** Delete thickness not required.
          4.Frame and Blade Material and Nominal Thickness: Galvanized-steel, not less than 0.052 inch (1.32 mm).
          5.Frame and Blade Material and Nominal Thickness: Galvanized-steel, not less than 0.064 inch (1.63 mm).
          6.Frame and Blade Material and Nominal Thickness: Stainless-steel, not less than 0.050 inch (1.27 mm).
          7.Frame and Blade Material and Nominal Thickness: Stainless-steel, not less than 0.062 inch (1.59 mm).
          8.Mullion Type: Exposed.
 
          B.Horizontal, Drainable-Blade Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model GS4D45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 8.00 sq ft (0.74 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.14 inch wg (35 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 987 fpm (5.0 m per sec).
          2.Basis of Design: Model GS6D45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 6 inches (150 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 8.31 sq ft (0.77 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.14 inch wg (35 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 952 fpm (4.8 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          3.Basis of Design: Model GS6D35H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 3.5 inches (89 mm).
          d.Blade Angle: 35 degrees.
          e.Free Area: 8.84 sq ft (0.82 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.138 inch wg (34 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1096 fpm (5.6 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line. Visible mullion required every 10 feet (3048 mm) maximum.
          ** NOTE TO SPECIFIER ** Delete thickness not required.
          4.Frame and Blade Material and Nominal Thickness: Galvanized-steel, not less than 0.052 inch (1.32 mm) for frames and 0.040 inch (1.02 mm) for blades.
          5.Frame and Blade Material and Nominal Thickness: Galvanized-steel, not less than 0.052 inch (1.32 mm).
          6.Frame and Blade Material and Nominal Thickness: Galvanized-steel, not less than 0.064 inch (1.63 mm).
          7.Frame and Blade Material and Nominal Thickness: Stainless-steel, not less than 0.050 inch (1.27 mm).
          8.Frame and Blade Material and Nominal Thickness: Stainless-steel, not less than 0.062 inch (1.59 mm).
          9.Mullion Type: Exposed.
          ** NOTE TO SPECIFIER ** Delete if not required.
          10.AMCA Seal: Mark units with AMCA Certified Ratings Seal.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.5FIXED, ACOUSTICAL LOUVERS
          ** NOTE TO SPECIFIER ** Delete product types not required.
 
          A.Acoustic Performance: Provide acoustical louvers complying with ratings specified, as demonstrated by testing manufacturer's stock units identical to those specified except for length and width:
          1.Airborne sound-transmission loss according to ASTM E 90.
          2.Outdoor-indoor, sound-transmission loss according to ASTM E 966.
 
          B.Fixed, Formed-Metal Acoustical Louver: Louver with formed-metal blades filled on interior with mineral-fiber, rigid-board, acoustical insulation retained by perforated metal sheet of same material and finish as blade.
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AS12AC45H/GS12AC45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 12 inches (300 mm).
          b.Blade Profile: Non-Drainable blade.
          c.Blade Spacing: 12 inches (300 mm).
          d.Blade Angle: 35 degrees.
          e.Free Area: 4.03 sq ft (0.38 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.138 inch wg (34 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1057 fpm (5.4 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          2.Basis of Design: Model AS126AC45H/GS126AC45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 12 inches (300 mm).
          b.Blade Profile: Acoustical.
          c.Blade Spacing: 6 inches (150 mm).
          d.Blade Angle: 42 degrees.
          e.Free Area: 3.98 sq ft (0.37 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.07 inch wg (17 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1084 fpm (5.5 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          3.Basis of Design: Model AS66AC45H/GS66AC45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Acoustical.
          c.Blade Spacing: 6 inches (150 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 4.23 sq ft (0.39 sq m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.10 inch wg (25 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 858 fpm (4.4 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          4.Basis of Design: Model AS88AC45H/GS88AC45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 8 inches (200 mm).
          b.Blade Profile: Acoustical.
          c.Blade Spacing: 8 inches (200 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 4.03 sq ft (0.67 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.085 inch wg (21 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 990 fpm (5.0 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          5.Basis of Design: Model GC7ID35H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 7 inches (178 mm).
          b.Blade Profile: Acoustical.
          c.Blade Spacing: 3 inches (76 mm).
          d.Blade Angle: 35 degrees, adjustable.
          e.Free Area: 7.26 sq ft (0.67 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.17 inch wg (42 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 841 fpm (4.3 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          6.Basis of Design: Model GS4AC45H/GS4AC45L; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Acoustical.
          c.Blade Spacing: 7.5 inches (190 mm).
          d.Blade Angle: 40 degrees.
          e.Free Area: 4.51 sq ft (0.42 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.18 inch wg (45 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 787 fpm (4.0 m per sec).
          ** NOTE TO SPECIFIER ** Continuous line is optional. Delete if not required.
          h.Continuous line.
          ** NOTE TO SPECIFIER ** Delete materials thickness not required.
          7.Frame Material: Extruded aluminum or aluminum sheet, not less than 0.080 inch (2.03 mm).
          8.Frame Material: Galvanized-steel, not less than 0.052 inch (1.32 mm).
          9.Frame Material: Galvanized-steel, not less than 0.064 inch (1.63 mm).
          10.Blade Material: Aluminum sheet, not less than 0.063 inch (1.60 mm).
          11.Blade Material: Aluminum sheet, not less than 0.080 inch (2.03 mm).
          12.Blade Material: Galvanized-steel sheet, not less than 0.034 inch (0.86 mm).
          13.Blade Material: Galvanized-steel sheet, not less than 0.040 inch (1.02 mm).
          14.Blade Material: Galvanized-steel sheet, not less than 0.052 inch (1.32 mm).
          ** NOTE TO SPECIFIER ** Delete sound performance requirements not required.
          15.Airborne Sound-Transmission Loss: STC 10 per ASTM E 413, determined by testing in accordance with ASTM E 90.
          16.Airborne Sound-Transmission Loss: _____ per ASTM E 413, determined by testing in accordance with ASTM E 90.
          17.Outdoor-Indoor, Sound Transmission Loss: OITC 10 per ASTM E 1332, determined by testing in accordance with ASTM E 966.
          18.Outdoor-Indoor, Sound Transmission Loss: _____ per ASTM E 1332, determined by testing in accordance with ASTM E 966.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.6OPERABLE, EXTRUDED-ALUMINUM LOUVERS
 
          A.Louver Construction and Operation: Provide operable louvers with extruded-aluminum frames and blades not less than 0.080-inch (2.03-mm) nominal thickness, and with operating mechanisms to suit louver sizes.
          ** NOTE TO SPECIFIER ** Delete operation methods not required.
          1.Operation: Hand operation with push bars.
          2.Operation: Crank operation with removable-crank operator in sill or jamb.
          3.Operation: Chain operation with tension spring, wall clip, pull chain, and 160 degrees F (71 degrees C) fusible link.
          4.Operation: Motor operation with two-position, spring-return application (with power on, motor opens louver; with power off, spring closes louver); 24-V to 230-V, 60-Hz motor and limit switch.
          ** NOTE TO SPECIFIER ** Delete controls not required.
          a.Frame-mounted switch.
          b.Remote-mounted switch with indicator light.
          c.Terminals for controlling devices.
          5.Operation: Motor operation with two-direction, 24-V to 230-V, 60-Hz motor and limit switches.
          ** NOTE TO SPECIFIER ** Delete controls not required.
          a.Frame-mounted switch.
          b.Remote-mounted switch with indicator light.
          c.Terminals for controlling devices.
          6.Operation: Pneumatic piston operation for use with 80- to 100-psi (550- to 690-kPa) compressed air operation; power open, power close.
          ** NOTE TO SPECIFIER ** Delete operation not required.
          a.Operation: Two-position.
          b.Operation: Modulating.
          ** NOTE TO SPECIFIER ** Delete if not required.
          c.Include spring-return fail-safe.
          ** NOTE TO SPECIFIER ** Delete product types not required.
 
          B.Single-Blade, Operable Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AA4S35H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Pin-Lock.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: Adjustable.
          e.Free Area: 6.84 sq ft (0.64 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.16 inch wg (40 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1044 fpm (5.3 m per sec).
          2.Basis of Design: Model AA6S90H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Pin-Lock.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: Adjustable.
          e.Free Area: 10.71 sq ft (0.99 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.14 inch wg (35 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 681 fpm (3.5 m per sec).
          3.Basis of Design: Model AA4D45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Pin-Lock.
          c.Blade Spacing: 4 inches (100 mm).
          d.Blade Angle: Adjustable.
          e.Free Area: 7.07 sq ft (0.66 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.14 inch wg (35 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 974 fpm (4.9 m per sec).
          4.Basis of Design: Model AA6S45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Non-Drainable blade with center baffle.
          c.Blade Spacing: 4.5 inches (114 mm).
          d.Blade Angle: Adjustable.
          e.Free Area: 9.06 sq ft (0.84 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.15 inch wg (37 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 841 fpm (4.3 m per sec).
          5.Basis of Design: Model AA6D45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Non-Drainable blade with center baffle.
          c.Blade Spacing: 4.5 inches (114 mm).
          d.Blade Angle: Adjustable.
          e.Free Area: 8.58 sq ft (0.80 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.145 inch wg (36 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 880 fpm (4.5 m per sec).
          ** NOTE TO SPECIFIER ** Select one of the following three subparagraphs. Delete items not required.
          6.Provide vinyl blade-edge gaskets for each louver blade.
          7.Provide stainless steel jamb seals.
          8.Provide stainless steel jamb seals or vinyl blade-edge gaskets for each louver blade.
          ** NOTE TO SPECIFIER ** Delete air leakage requirements not required.
          9.Air Leakage: Not more than 3.5 cfm per secq ft (17.8 L/s per sq m) of louver gross area at a differential static pressure of 0.15 inch wg (37 Pa) with operable louver blades closed.
          10.Air Leakage: Not more than _____ of louver gross area at a differential static pressure of 0.15 inch wg (37 Pa) with operable louver blades closed.
          ** NOTE TO SPECIFIER ** Delete if not required.
          11.AMCA Seal: Mark units with AMCA Certified Ratings Seal.
 
          C.Dual-Blade, Operable Louver: Fixed drainable blades and operable Non-Drainable blades combined in a single frame.
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model AC4D35H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Drainable.
          c.Blade Spacing: 3.5 inches (89 mm).
          d.Blade Angle: 35 degrees, adjustable.
          e.Free Area: 8.36 sq ft (0.78 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.14 inch wg (35 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 994 fpm (5.0 m per sec).
          2.Basis of Design: Model AC6D35H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Drainable.
          c.Blade Spacing: 4.5 inches (114 mm).
          d.Blade Angle: 35 degrees, adjustable.
          e.Free Area: 8.24 sq ft (0.77 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.11 inch wg (27 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1029 fpm (5.2 m per sec).
          3.Basis of Design: Model AC6D35HAF; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Straight.
          c.Blade Spacing: 4.5 inches (114 mm).
          d.Blade Angle: 35 degrees, adjustable.
          e.Free Area: 8.24 sq ft (0.77 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.13 inch wg (32 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 1029 fpm (5.2 m per sec).
          4.Basis of Design: Model AC6S35H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Straight.
          c.Blade Spacing: 4.5 inches (114 mm).
          d.Blade Angle: 35 degrees, adjustable.
          e.Free Area: 8.38 sq ft (0.78 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.18 inch wg (45 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 981 fpm (4.8 m per sec).
          ** NOTE TO SPECIFIER ** Delete air leakage requirements not required.
          5.Air Leakage: Not more than 1.5 cfm per sq ft (7.6 L/s per sq m) of louver gross area at a differential static pressure of 0.15 inch wg (37 Pa) with operable louver blades closed.
          6.Air Leakage: Not more than _____ of louver gross area at a differential static pressure of 0.15 inch wg (37 Pa) with operable louver blades closed.
          ** NOTE TO SPECIFIER ** Delete if not required.
          7.AMCA Seal: Mark units with AMCA Certified Ratings Seal.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.7OPERABLE, FORMED-METAL LOUVERS
 
          A.Louver Operation: Provide operable louvers with operating mechanisms to suit louver sizes.
          ** NOTE TO SPECIFIER ** Delete operation methods not required.
          1.Operation: Hand operation with push bars.
          2.Operation: Crank operation with removable-crank operator in sill or jamb.
          3.Operation: Chain operation with tension spring, wall clip, pull chain, and 160 degrees F (71 degrees C) fusible link.
          4.Operation: Motor operation with two-position, spring-return application (with power on, motor opens louver; with power off, spring closes louver); 24-V to 230-V, 60-Hz motor and limit switch.
          ** NOTE TO SPECIFIER ** Delete controls not required.
          a.Frame-mounted switch.
          b.Remote-mounted switch with indicator light.
          c.Terminals for controlling devices.
          5.Operation: Motor operation with two-direction, 24-V to 230-V, 60-Hz motor and limit switches.
          ** NOTE TO SPECIFIER ** Delete controls not required.
          a.Frame-mounted switch.
          b.Remote-mounted switch with indicator light.
          c.Terminals for controlling devices.
          6.Operation: Pneumatic piston operation for use with 80- to 100-psi (550- to 690-kPa) compressed air operation; power open, power close.
          ** NOTE TO SPECIFIER ** Delete operation not required.
          a.Operation: Two-position.
          b.Operation: Modulating.
          ** NOTE TO SPECIFIER ** Delete if not required.
          c.Include spring-return fail-safe.
          ** NOTE TO SPECIFIER ** Delete product types not required.
 
          B.Single-Blade, Operable Louver:
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model GA6D45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 6 inches (150 mm).
          b.Blade Profile: Straight.
          c.Blade Spacing: 3.5 inches (89 mm).
          d.Blade Angle: 45 degrees, adjustable.
          e.Free Area: 8.50 sq ft (0.79 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.108 inch wg (27 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 859 fpm (4.4 m per sec).
          2.Basis of Design: Model GA4S45H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 4 inches (100 mm).
          b.Blade Profile: Straight.
          c.Blade Spacing: 4.375 inches (111 mm).
          d.Blade Angle: 45 degrees.
          e.Free Area: 7.79 sq ft (0.72 sq.m) for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          f.Pressure Drop: 0.20 inch wg (50 Pa) static pressure drop at 1000 fpm (5.1 m per sec) free-area velocity.
          g.Point of Beginning Water Penetration: 645 fpm (3.3 m per sec).
          ** NOTE TO SPECIFIER ** Select one of the following three subparagraphs. Delete items not required.
          3.Provide vinyl blade-edge gaskets for each louver blade.
          4.Provide stainless steel jamb seals.
          5.Provide stainless steel jamb seals or vinyl blade-edge gaskets for each louver blade.
          ** NOTE TO SPECIFIER ** Delete air leakage requirements not required.
          6.Air Leakage: Not more than 3.5 cfm per secq ft (17.8 L/s per sq m) of louver gross area at a differential static pressure of 0.15 inch wg (37 Pa) with operable louver blades closed.
          7.Air Leakage: Not more than _____ of louver gross area at a differential static pressure of 0.15 inch wg (37 Pa) with operable louver blades closed.
          ** NOTE TO SPECIFIER ** Delete if not required.
          8.AMCA Seal: Mark units with AMCA Certified Ratings Seal.
 
          C.Dual-Blade, Operable Louver: Fixed drainable blades and operable Non-Drainable blades combined in a single frame.
          ** NOTE TO SPECIFIER ** Delete Basis of Design products not required.
          1.Basis of Design: Model GC6D35H; as manufactured by Airline Louvers, a Mestek Company.
          a.Louver Depth: 7 inches (150 mm).
          b.Blade Profile: Straight.
          c.Blade Spacing: 3 inches (76 mm).
          d.Blade Angle: 35 degrees, adjustable.
          ** NOTE TO SPECIFIER ** Delete materials and thicknesses not required.
          2.Frame and Blade Material and Nominal Thickness: Galvanized steel sheet, not less than 0.052 inch (1.32 mm) for frames and 0.040 inch (1.02 mm) for blades.
          3.Frame and Blade Material and Nominal Thickness: Galvanized steel sheet, not less than 0.052 inch (1.32 mm).
          4.Frame and Blade Material and Nominal Thickness: Galvanized steel sheet, not less than 0.064 inch (1.63 mm).
          5.Frame and Blade Material and Nominal Thickness: Stainless steel sheet, not less than 0.050 inch (1.27 mm).
          6.Frame and Blade Material and Nominal Thickness: Stainless steel sheet, not less than 0.062 inch (1.59 mm).
          7.Free Area: Not less than _____ for a 48 inch (1220 mm) wide by 48 inch (1220 mm) high louver.
          8.Pressure Drop: Not more than _____ static pressure drop at _____ free-area velocity.
          9.Point of Beginning Water Penetration: Not less than ______.
          ** NOTE TO SPECIFIER ** Delete air leakage requirements not required.
          10.Air Leakage: Not more than 1.5 cfm per sq ft (7.6 L/s per sq m) of louver gross area at a differential static pressure of 0.15 inch wg (37 Pa) with operable louver blades closed.
          11.Air Leakage: Not more than _____ of louver gross area at a differential static pressure of 0.15 inch wg (37 Pa) with operable louver blades closed.
          ** NOTE TO SPECIFIER ** Delete if not required.
          12.AMCA Seal: Mark units with AMCA Certified Ratings Seal.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.8OPERABLE, INSULATED LOUVERS
 
          A.Louver Operation: Provide operable louvers with operating mechanisms to suit louver sizes.
          ** NOTE TO SPECIFIER ** Delete operation methods not required.
          1.Operation: Hand operation with push bars.
          2.Operation: Crank operation with removable-crank operator in sill or jamb.
          3.Operation: Chain operation with tension spring, wall clip, pull chain, and 160 degrees F (71 degrees C) fusible link.
          4.Operation: Motor operation with two-position, spring-return application (with power on, motor opens louver; with power off, spring closes louver); 24-V to 230-V, 60-Hz motor and limit switch.
          ** NOTE TO SPECIFIER ** Delete controls not required.
          a.Frame-mounted switch.
          b.Remote-mounted switch with indicator light.
          c.Terminals for controlling devices.
          5.Operation: Motor operation with two-direction, 24-V to 230-V, 60-Hz motor and limit switches.
          ** NOTE TO SPECIFIER ** Delete controls not required.
          a.Frame-mounted switch.
          b.Remote-mounted switch with indicator light.
          c.Terminals for controlling devices.
          6.Operation: Pneumatic piston operation for use with 80- to 100-psi (550- to 690-kPa) compressed air operation; power open, power close.
          ** NOTE TO SPECIFIER ** Delete operation not required.
          a.Operation: Two-position.
          b.Operation: Modulating.
          ** NOTE TO SPECIFIER ** Delete if not required.
          c.Include spring-return fail-safe.
          ** NOTE TO SPECIFIER ** Delete product types not required.
 
          B.Operable, Insulated, Extruded-Aluminum Louver: Single-blade, operable louver with gasketed, insulated blades. Frames and blade frames have urethane thermal break.
          1.Frames: Extruded aluminum, not less than 0.080 inch (2.03 mm) nominal thickness.
          2.Blade facings: Sheet aluminum, not less than 0.032 inch (0.81 mm) nominal thickness.
          ** NOTE TO SPECIFIER ** Delete louver depths not required.
          3.Louver Depth: 6 inches (150 mm).
          4.Louver Depth: 9 inches (225 mm).
          ** NOTE TO SPECIFIER ** Delete insulation types not required.
          5.Insulation: Extruded polystyrene foam, 2 inches (50 mm) thick.
          6.Insulation: Foamed-in-place polyurethane.
 
          C.Operable, Insulated, Formed-Metal Louver: Single-blade, operable louver with gasketed, insulated blades.
          ** NOTE TO SPECIFIER ** Delete louver depths not required.
          1.Louver Depth: 6 inches (150 mm).
          2.Louver Depth: 8 inches (200mm).
          ** NOTE TO SPECIFIER ** Delete materials and thicknesses not required.
          3.Frames: Galvanized steel sheet, not less than 0.052 inch (1.32 mm) nominal thickness.
          4.Frames: Galvanized steel sheet, not less than 0.064 inch (1.63 mm) nominal thickness.
          5.Frames: Stainless steel sheet, not less than 0.050 inch (1.27 mm) nominal thickness.
          6.Frames: Stainless steel sheet, not less than 0.062 inch (1.59 mm) nominal thickness.
          7.Blade facings: Galvanized steel sheet, not less than 0.028 inch (0.71 mm) nominal thickness.
          8.Blade facings: Galvanized steel sheet, not less than 0.040 inch (1.02 mm) nominal thickness.
          9.Blade facings: Galvanized steel sheet, not less than 0.052 inch (1.32 mm) nominal thickness.
          10.Blade facings: Galvanized steel sheet, not less than 0.064 inch (1.63 mm) nominal thickness.
          11.Blade facings: Stainless steel sheet, not less than 0.025 inch (0.64 mm) nominal thickness.
          12.Blade facings: Stainless steel sheet, not less than 0.038 inch (0.95 mm) nominal thickness.
          13.Blade facings: Stainless steel sheet, not less than 0.050 inch (1.27 mm) nominal thickness.
          14.Blade facings: Stainless steel sheet, not less than 0.062 inch (1.59 mm) nominal thickness.
          ** NOTE TO SPECIFIER ** Delete insulation types not required.
          15.Insulation: Extruded polystyrene foam, 1 inch (25 mm) thick.
          16.Insulation: Rigid, glass-fiber board insulation, 1 inch (25 mm) thick.
          17.Insulation: Foamed-in-place polyurethane, 1/2 inch (13 mm) thick.
          18.Insulation: _____.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.9LOUVER SCREENS
 
          A.General:
          ** NOTE TO SPECIFIER ** Delete locations not required.
          1.Locations: Provide screen at each exterior louver.
          2.Locations: Provide screen at louvers indicated.
          3.Screen Location for Fixed Louvers: Interior face.
          4.Screen Location for Operable Louvers: Interior face unless otherwise indicated.
          5.Screen Location for Operable Louvers: Exterior face unless otherwise indicated.
          ** NOTE TO SPECIFIER ** Delete screening types not required.
          6.Screening Type: Bird screening.
          7.Screening Type: Bird screening except where insect screening is indicated.
          8.Screening Type: Insect screening.
          ** NOTE TO SPECIFIER ** Delete screw type not required.
          9.Secure screen frames to louver frames with stainless-steel machine screws, spaced a maximum of 6 inches (150 mm) from each corner and 12 inches (300 mm) on center.
          10.Secure screen frames to louver frames with machine screws with heads finished to match louver, spaced a maximum of 6 inches (150 mm) from each corner and 12 inches (300 mm) on center.
          11.Louver Screen Frames: Fabricate with notched and cinched corners to louver sizes indicated.
          ** NOTE TO SPECIFIER ** Delete options not required.
          a.Metal: Same type and form of metal as indicated for louver to which screens are attached.
          b.Finish: Same finish as louver frames to which louver screens are attached.
          c.Finish: Mill finish unless otherwise indicated.
          d.Screen Frame Type: Rewirable frames with a driven spline or insert.
          e.Screen Frame Type: Non-rewirable, U-shaped frames.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          B.Louver Screening for Aluminum Louvers:
          ** NOTE TO SPECIFIER ** Delete screening options not required.
          1.Bird Screening: Aluminum, 1/2 inch (13 mm) square mesh, 0.063 inch (1.60 mm) wire.
          2.Bird Screening: Stainless steel, 1/2 inch (13 mm) square mesh, 0.047 inch (1.19 mm) wire.
          3.Bird Screening: Flattened, expanded aluminum, 3/4 by 0.050 inch (19 by 1.27 mm) thick.
          4.Insect Screening: Aluminum, 18 by 16 (1.4 by 1.6 mm) mesh, 0.012 inch (0.30 mm) wire.
          5.Insect Screening: Stainless steel, 18 by 18 (1.4 by 1.4 mm) mesh, 0.009 inch (0.23 mm) wire.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          C.Louver Screening for Galvanized-Steel Louvers:
          ** NOTE TO SPECIFIER ** Delete screening options not required.
          1.Bird Screening: Galvanized steel, 1/2 inch (13 mm) square mesh, 0.041 inch (1.04 mm) wire.
          2.Bird Screening: Stainless steel, 1/2 inch (13 mm) square mesh, 0.047 inch (1.19 mm) wire.
          3.Insect Screening: Aluminum, 18 by 14 (1.4 by 1.8 mm) mesh, 0.011 inch (0.28 mm) wire.
          4.Insect Screening: Stainless steel, 18 by 18 (1.4 by 1.4 mm) mesh, 0.009 inch (0.23 mm) wire.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          D.Louver Screening for Stainless-Steel Louvers:
          ** NOTE TO SPECIFIER ** Delete screening options not required.
          1.Bird Screening: Stainless steel, 1/2 inch (13 mm) square mesh, 0.047 inch (1.19 mm) wire.
          2.Insect Screening: Stainless steel, 18 by 18 (1.4 by 1.4 mm) mesh, 0.009 inch (0.23 mm) wire.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.10BLANK-OFF PANELS
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          A.Uninsulated, Blank-Off Panels: Metal sheet attached to back of louver.
          ** NOTE TO SPECIFIER ** Delete materials not required.
          1.Material: Aluminum sheet for aluminum louvers, not less than 0.050 inch (1.2 mm) nominal thickness.
          2.Material: Galvanized-steel sheet for galvanized-steel louvers, not less than 0.040 inch (1.02 mm) nominal thickness.
          3.Material: Galvanized-steel sheet for galvanized-steel louvers, not less than 0.052 inch (1.32 mm) nominal thickness.
          4.Material: Stainless-steel sheet for stainless-steel louvers, not less than 0.038 inch (0.95 mm) nominal thickness.
          5.Material: Stainless-steel sheet for stainless-steel louvers, not less than 0.050 inch (1.27 mm) nominal thickness.
          ** NOTE TO SPECIFIER ** Delete finish not required.
          6.Panel Finish: Same finish applied to louvers.
          7.Panel Finish: Same finish type applied to louvers, but black color.
          ** NOTE TO SPECIFIER ** Delete attachment type not required.
          8.Attachment: Attach blank-off panels with clips.
          9.Attachment: Attach blank-off panels with sheet metal screws.
          10.Attachment: Attach blank-off panels with _____.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          B.Insulated, Blank-Off Panels: Laminated panels consisting of an insulating core surfaced on back and front with metal sheets and attached to back of louver.
          ** NOTE TO SPECIFIER ** Delete thicknesses not required.
          1.Thickness: 1 inch (25 mm).
          2.Thickness: 2 inches (50 mm).
          3.Thickness: 4 inches (100 mm).
          ** NOTE TO SPECIFIER ** Delete facing sheets not required.
          4.Metal Facing Sheets: Aluminum sheet, not less than 0.032 inch (0.81 mm) nominal thickness.
          5.Metal Facing Sheets: Galvanized-steel sheet, not less than 0.028 inch (0.71 mm) nominal thickness.
          6.Metal Facing Sheets: Stainless-steel sheet, not less than 0.031 inch (0.79 mm) nominal thickness.
          ** NOTE TO SPECIFIER ** Delete insulating cores not required.
          7.Insulating Core: Rigid, glass-fiber insulation.
          8.Insulating Core: Two-part polyurethane foam.
          9.Insulating Core: Rigid, glass-fiber insulation or two-part polyurethane foam.
          10.Insulating Core: _____.
          ** NOTE TO SPECIFIER ** Delete edge treatment types not required.
          11.Edge Treatment: Trim perimeter edges of blank-off panels with louver manufacturer's standard extruded aluminum channel frames, not less than 0.080 inch (2.03 mm) nominal thickness, with corners mitered and with same finish as panels.
          12.Edge Treatment: Trim perimeter edges of blank-off panels with louver manufacturer's standard channel frames, with corners mitered and with same finish as panels.
          13.Edge Treatment: ______.
          14.Seal perimeter joints between panel faces and louver frames with gaskets or sealant.
          ** NOTE TO SPECIFIER ** Delete finish not required.
          15.Panel Finish: Same finish applied to louvers.
          16.Panel Finish: Same finish type applied to louvers, but black color.
          ** NOTE TO SPECIFIER ** Delete attachment type not required.
          17.Attachment: Attach blank-off panels with clips.
          18.Attachment: Attach blank-off panels with sheet metal screws.
          19.Attachment: Attach blank-off panels with _____.
 
          2.11MATERIALS
          ** NOTE TO SPECIFIER ** Delete materials not required.
 
          A.Aluminum Extrusions: ASTM B 221, Alloy 6063-T5, T-52, or T6.
 
          B.Aluminum Sheet: ASTM B 209, Alloy 3003 or 5005 with temper as required for forming, or as otherwise recommended by metal producer for required finish.
 
          C.Galvanized Sheet Steel: ASTM A 653/A 653M, G60 (Z180) zinc coating, mill phosphatized.
 
          D.Galvanized Sheet Steel: ASTM A 653/A 653M, G90 (Z275) zinc coating, mill phosphatized.
 
          E.Stainless Steel Sheet: ASTM A 240/ASTM 240M, Type 304, No. 2B finish.
 
          F.Stainless Steel Sheet: ASTM A 240/ASTM 240M, Type 304, No. 2D finish.
 
          G.Stainless Steel Sheet: ASTM A 240/ASTM 240M, Type 304, No. 4 finish, with grain running parallel to length of blades and frame members.
 
          H.Stainless Steel Sheet: ASTM A 240/ASTM 240M, Type 304, No. 4 finish, with grain running perpendicular to length of blades and frame members.
 
          I.Stainless Steel Sheet: ASTM A 240/ASTM 240M, Type 304, No. 4 finish, with grain running perpendicular to length of blades and parallel to length frame members.
 
          J.Stainless Steel Sheet: ASTM A 240/ASTM 240M, Type 304, No. 6 finish.
 
          K.Fasteners: Use types and sizes to suit unit installation conditions.
          ** NOTE TO SPECIFIER ** Delete screw types not required.
          1.Use hex-head screws for exposed fasteners unless otherwise indicated.
          2.Use tamper-resistant screws for exposed fasteners unless otherwise indicated.
          3.For fastening aluminum, use aluminum or 300 series stainless-steel fasteners.
          4.For fastening galvanized steel, use hot-dip galvanized steel or 300 series stainless-steel fasteners.
          5.For fastening stainless steel, use 300 series stainless-steel fasteners.
          6.For color-finished louvers, use fasteners with heads that match color of louvers.
 
          L.Post-Installed Fasteners for Concrete and Masonry: Torque-controlled expansion anchors, made from stainless-steel components, with capability to sustain, without failure, a load equal to 4 times the loads imposed, for concrete, or 6 times the load imposed for masonry, as determined by testing according to ASTM E 488, conducted by a qualified independent testing agency.
 
          M.Bituminous Paint: Cold-applied asphalt emulsion complying with ASTM D 1187.
 
          2.12FABRICATION
 
          A.Factory assemble louvers to minimize field splicing and assembly. Disassemble units as necessary for shipping and handling limitations. Clearly mark units for reassembly and coordinated installation.
 
          B.Vertical Assemblies: Where height of louver units exceeds fabrication and handling limitations, fabricate units to permit field-bolted assembly with close-fitting joints in jambs and mullions, reinforced with splice plates.
          ** NOTE TO SPECIFIER ** Delete assembly types not required.
          1.Continuous Vertical Assemblies: Fabricate units without interrupting blade-spacing pattern unless horizontal mullions are indicated.
          2.Continuous Vertical Assemblies: Fabricate units without interrupting blade-spacing pattern where indicated.
          3.Horizontal Mullions: Provide horizontal mullions at joints unless continuous vertical assemblies are indicated.
          4.Horizontal Mullions: Provide horizontal mullions at joints where indicated.
          ** NOTE TO SPECIFIER ** Select one of two options below. First option may not be possible with some designs. Delete option not required.
 
          C.Maintain equal louver blade spacing, including separation between blades and frames at head and sill, to produce uniform appearance.
 
          D.Maintain equal louver blade spacing to produce uniform appearance.
 
          E.Fabricate frames, including integral sills, to fit in openings of sizes indicated, with allowances made for fabrication and installation tolerances, adjoining material tolerances, and perimeter sealant joints.
          ** NOTE TO SPECIFIER ** Delete frame types not required.
          1.Frame Type: Channel, unless otherwise indicated.
          2.Frame Type: Exterior flange, unless otherwise indicated.
          3.Frame Type: Interior flange, unless otherwise indicated.
 
          F.Include supports, anchorages, and accessories required for complete assembly.
          ** NOTE TO SPECIFIER ** Coordinate with Drawings and product descriptions.
 
          G.Provide vertical mullions of type and at spacings indicated, but not more than is recommended by manufacturer, or 60 inches (1524 mm) o.c., whichever is less.
          ** NOTE TO SPECIFIER ** Select one of first two mullion types if louvers require continuous appearance. Delete mullion types not required.
          1.Fully Recessed Mullions: Where indicated, provide mullions fully recessed behind louver blades. Where length of louver exceeds fabrication and handling limitations, fabricate with close-fitting blade splices designed to permit expansion and contraction.
          2.Continuous Line Mullions: Where indicated, provide mullions partly recessed behind louver blades so louver blades appear continuous. Where length of louver exceeds fabrication and handling limitations, fabricate with interlocking split mullions and close-fitting blade splices designed to permit expansion and contraction.
          ** NOTE TO SPECIFIER ** Delete exterior corners if not required. If required, select options required.
          3.Exterior Corners: Prefabricated corner units.
          a.Blades: Mitered and welded.
          b.Mullions at Corners with a formed cover plate.
          ** NOTE TO SPECIFIER ** Indicated subsill and extended sill locations on Drawings. Delete options not required.
 
          H.Provide subsills made of same material as louvers for recessed louvers.
 
          I.Provide subsills made of same material as louvers or extended sills for recessed louvers.
 
          J.Provide extended sills for recessed louvers.
 
          K.Join frame members to each other and to fixed louver blades with filet welds unless otherwise indicated or size of louver assembly makes bolted connections between frame members necessary:
          ** NOTE TO SPECIFIER ** Delete options not required.
          1.Welds concealed from view.
          2.Threaded fasteners may be used, as standard with louver manufacturer.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.13ALUMINUM FINISHES
 
          A.Finish louvers after assembly.
          ** NOTE TO SPECIFIER ** Delete finish options not required.
 
          B.Clear Anodic Finish: AAMA 611, AA-M12C22A41, Class I, 0.018 mm or thicker.
 
          C.Clear Anodic Finish: AAMA 611, AA-M12C22A31, Class II, 0.010 mm or thicker.
 
          D.Color Anodic Finish:
          ** NOTE TO SPECIFIER ** Delete thickness not required.
          1.Thickness: AA-M12C22A42/A44, Class I, 0.018 mm.
          2.Thickness: AA-M12C22A32/A34, Class II, 0.010 mm.
          ** NOTE TO SPECIFIER ** Delete colors not required.
          3.Color: Champagne.
          4.Color: Light bronze.
          5.Color: Medium bronze.
          6.Color: Dark bronze.
          7.Color: Black.
 
          E.Conversion-Coated Finish: AA-C12C42 (Chemical Finish: cleaned with inhibited chemicals; Chemical Finish: acid-chromate-fluoride-phosphate conversion coating).
          ** NOTE TO SPECIFIER ** Use paragraph below for conversion-coated finish if extended delay in field painting is anticipated.
 
          F.Conversion-Coated and Factory-Primed Finish: AA-C12C42R1x (Chemical Finish: cleaned with inhibited chemicals; Chemical Finish: acid-chromate-fluoride-phosphate conversion coating; Organic Coating: as specified below).
          ** NOTE TO SPECIFIER ** Delete primer option not required.
          1.Primer: Organic Coating: Air-dried primer of not less than 2-mil (0.05-mm) dry film thickness.
          2.Primer: _____.
 
          G.Baked-Enamel or Powder-Coat Finish: AAMA 2604 except with a minimum dry film thickness of 2.4 mils (0.04 mm). Comply with coating manufacturer's written instructions for cleaning, conversion coating, and applying and baking finish.
          ** NOTE TO SPECIFIER ** Delete options not required.
          1.Color and Gloss: As indicated by manufacturer's designations.
          2.Color and Gloss: Match Architect's sample.
          3.Color and Gloss: As selected by Architect from manufacturer's full range.
          4.Color and Gloss: ______.
 
          H.High-Performance Organic Finish: Two-coat fluoropolymer finish. Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions.
          ** NOTE TO SPECIFIER ** Delete options not required.
          1.AAMA 2604 compliant.
          2.AAMA 2605 compliant.
          3.Containing not less than 50 percent PVDF resin by weight in color coat.
          4.Containing not less than 70 percent PVDF resin by weight in color coat.
          5.Color and Gloss: As indicated by manufacturer's designations.
          6.Color and Gloss: Match Architect's sample.
          7.Color and Gloss: As selected by Architect from manufacturer's full range.
          8.Color and Gloss: ______.
 
          I.High-Performance Organic Finish: Three-coat fluoropolymer finish complying with AAMA 2605. Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions.
          ** NOTE TO SPECIFIER ** Delete options not required.
          1.Containing not less than 50 percent PVDF resin by weight in color coat.
          2.Containing not less than 70 percent PVDF resin by weight in color coat.
          3.Color and Gloss: As indicated by manufacturer's designations.
          4.Color and Gloss: Match Architect's sample.
          5.Color and Gloss: As selected by Architect from manufacturer's full range.
          6.Color and Gloss: ______.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.14GALVANIZED STEEL SHEET FINISHES
 
          A.Finish louvers after assembly.
 
          B.Surface Preparation: Clean surfaces with nonpetroleum solvent so surfaces are free of oil and other contaminants. After cleaning, apply a conversion coating compatible with the organic coating to be applied over it. Clean welds, mechanical connections, and abraded areas and repair according to ASTM A 780.
 
          C.Baked-Enamel or Powder-Coat Finish: Immediately after cleaning and pretreating, apply manufacturer's standard two-coat, baked-on finish consisting of prime coat and thermosetting topcoat, with a minimum dry film thickness of 2 mils (0.05 mm).
          ** NOTE TO SPECIFIER ** Delete options not required.
          1.Color and Gloss: As indicated by manufacturer's designations.
          2.Color and Gloss: Match Architect's sample.
          3.Color and Gloss: As selected by Architect from manufacturer's full range.
          4.Color and Gloss: ______.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.15STAINLESS STEEL SHEET FINISHES
 
          A.Repair sheet finish by grinding and polishing irregularities, weld spatter, scratches, and forming marks to match surrounding finish.
 
          PART 3EXECUTION
 
          3.1EXAMINATION
 
          A.Do not begin installation until substrates have been properly constructed and prepared.
 
          B.If substrate preparation is the responsibility of another installer, notify Architect in writing of unsatisfactory preparation before proceeding.
 
          3.2PREPARATION
 
          A.Clean surfaces thoroughly prior to installation.
 
          B.Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
 
          3.3INSTALLATION
 
          A.Install in accordance with manufacturer's instructions, approved submittals and in proper relationship with adjacent construction.
 
          B.Locate and place louvers level, plumb, and at indicated alignment with adjacent work.
 
          C.Use concealed anchorages where possible. Provide brass or lead washers fitted to screws where required to protect metal surfaces and to make a weathertight connection.
 
          D.Form closely fitted joints with exposed connections accurately located and secured.
 
          E.Provide perimeter reveals and openings of uniform width for sealants and joint fillers, as indicated.
 
          F.Protect unpainted galvanized and nonferrous-metal surfaces that are in contact with concrete, masonry, or dissimilar metals from corrosion and galvanic action by applying a heavy coating of bituminous paint or by separating surfaces with waterproof gaskets or nonmetallic flashing.
 
          G.Install concealed gaskets, flashings, joint fillers, and insulation as louver installation progresses, where weathertight louver joints are required.
 
          3.4ADJUSTING
 
          A.Test operable louvers and adjust as needed to produce fully functioning units that comply with requirements.
 
          3.5CLEANING AND PROTECTION
 
          A.Clean products in accordance with the manufacturers recommendations.
 
          B.Touch-up, repair or replace damaged products before Substantial Completion.
 
         
END OF SECTION