• 23 31 13 - Metal Ducts
• 23 33 46 - Flexible Ducts
• 23 31 16.13 - Fibrous-Glass Ducts
• 23 31 16 - Nonmetal Ducts
• 23 31 16.26 - Concrete Ducts
• 23 31 16.19 - PVC Ducts
• 23 31 13.13 - Rectangular Metal Ducts
• 33 05 33.63 - HDPE Communication Duct
• 23 31 00 - HVAC Ducts and Casings
• 33 05 31.29 - Polyvinyl Chloride Electrical Duct
• 23 33 00 - Air Duct Accessories
• 23 31 16.16 - Thermoset Fiberglass-Reinforced Plastic Ducts

• Hart and Cooley posted 13 NEW eCatlaogs for Metal Ducts
  2017-03-28 Company
• Hart and Cooley posted 4 NEW videos for Metal Ducts
  2017-03-23 Company
• DuctSox Corporation posted 15 NEW videos for HVAC Ducts and Casings
  2016-11-04 Company
• Kingspan Insulation LLC has an UPDATED Spec for Ventilation Ducts
  2016-04-15 Company
• Kingspan Insulation LLC has a NEW Spec for Ventilation Ducts
  2016-03-10 Company
• Prihoda North America has an UPDATED Spec for Fabric Ducts and Diffusers
  2016-02-10 Company
• Prihoda North America has a NEW Spec for Fabric Ducts and Diffusers
  2016-01-06 Company
• Selkirk, Inc. has added 30 NEW BIM Families for their Ventilation Ducts
  2015-10-27 Company
• Selkirk, Inc. has a NEW Spec for Ventilation Ducts
  2014-12-05 Company
• Hart & Cooley has a NEW Spec for Ventilation Ducts
  2014-12-05 Company