Our quality steel doors are American made, manufactured by Mesker Door in Huntsville, Alabama. We call them the "N"-Series because they're Non-handed (reversible), giving you much greater flexibility when installing our standard N-Series hollow metal doors.

Our doors have the cost-savings flexibility of being non-handed with square edges. And they're flush, constructed with two face sheets of 14-gauge steel, with a stretcher-leveled quality of flatness. The vertical edges are ground and finished to give your hollow metal doors a smooth and seamless appearance. All hinge reinforcements are 3/16 inch steel projection-welded to the steel door edge at 3 points above and 3 points below the hinge mortise.

The new patent-pending Slide Lock Replacement Door from Mesker is your all-in-one commercial replacement door solution. It's the nearly perfect retrofit door. Featuring the patent-pending slide lock, along with a full mortise continuous geared hinge and commercial lockset, the Slide Lock Replacement Door covers almost 100% of existing commercial hinge and strike locations, making it the ideal replacement door and retrofit door for any hollow metal application. The hardware is pre-applied to the door for easy installation and packaged for maximum protection during shipping.

Introducing the patent-pending technology that's revolutionizing the strength and aesthetics of seamless doors. Our NVS Seamless doors are continuously welded doors that more than double the strength of standard seamed-edge doors - with no putty or filler. Backed by a lifetime structural weld warranty, NVS Seamless doors offer unparalleled strength, quality and beauty that won't crack or change with time.

Stiffeners increase the weight of a steel door, putting significant pressure on the opening and sometimes making them difficult to open for seniors and children. The vertical stiffeners in a hollow metal door also mean that pressure on the corners or the sides of the door with cause it to twist. Last but not least, stiffeners are welded into a steel door every six inches which may result in blemishes on the surface. Our fully welded seamless door does away with all of those disadvantages while saving you money.

Our unique design of the Mesker temperature rise door has earned it a best-in-class rating for heat transmission, as tested by Underwriters Laboratory in accordance with ASTM E152. Using premium fiberboard core, our temperature rise door keeps the side of the door not exposed to fire below 250 degrees F for 30 minutes. Our competitors' temperature rise doors may reach 400 degrees F - enough to remove human skin when touched. Do your research. Talk with fire authorities. You'll find agreement that temperature rise doors which transfer less heat, less quickly are safer.

Why use a Mesker hollow metal dutch door? To give you a measure of room-to-room safety and security even while the open top half of the dutch door allows visibility and communication. Dutch doors are often used in child care facilities, churches and hospitals.

Compared to wood doors, our paneled doors enhance the beauty of a room while giving you the unique benefits of hollow metal doors - safety, security and durability.

They're available in 2 panel door, 3 panel door, 4 panel door, 6 panel door, 8 panel door, and 9 panel door configurations with our fine polystyrene core that's fully bonded to the face sheets, giving you excellent door insulation and acoustical door benefits in each paneled door.

Our cutting edge engineering creatively combines a traditional woodgrain door look with the performance and durability of a steel door. Our woodgrain doors are ideal for high traffic entrances in restaurants, retail locations, and high-end offices, as well as educational, religious and municipal facilities. Take a good look at our 6 panel woodgrain doors or flush doors, and you'll see an authentic woodgrain door texture that we'll customize for you in warm Sherwin Williams colors.

Our innovative hollow metal door is so versatile that you avoid problems that may arise with other products. All hinge reinforcements are 3/16 inch steel projection-welded to door edge at three points above and 3 points below the hinge mortise. Both N-Series and 14 gauge hollow metal doors have 16 gauge top and bottom channels welded to door skins on 4 inch centers. All 1-3/4 inch doors have factory-installed box type closer reinforcements to reinforce both sides of door. Standard hardware mortising for 1-3/4 inch doors are 4 1/2 x 4 1/2 inch template butt hinges (3 per door in 6'-8", 7'-0", and 7'-2" sizes and 4 per door in 7'-10" and 8'-0" sizes) and either government 86 or 161 series locksets. Mesker hollow metal doors are also mortised, drilled and tapped for other mortised hardware as required and reinforced for surface applied hardware. At the bottom of this page is a graphic that depicts details of our hollow metal doors, including the reinforcements.

At Mesker, you'll save on your heating and cooling costs by considering the thermal rating of hollow metal door cores. A good core choice means you'll benefit from continual savings without adding to the original cost of your hollow metal doors. Mesker has the information you need to figure how door cores affect your energy costs. The graph below gives you an idea of which cores are more energy efficient. To estimate your cost savings, you'll need to approximate the number of days you'll be using your heating during each season. Your energy supplier also has helpful information to help you calculate your hollow metal door and frame energy efficiency.

Our standard F-series masonry frame is the best stock hollow metal assembly in the industry. We use only the best materials, such as 16 or 14 gauge cold rolled steel or A60 Galvannealed steel for corrosive applications. To insure consistent and accurate quality, we also use state-of-the-art technology, such as our computer-controlled MIG welders and an overhead trolley line paint booth. We surpass the industry requirements by using 3/16 inch hinge reinforcements to outlast the heaviest hollow metal doors.

Unlike our competitors, we use only 16 gauge cold-rolled or A60 Galvannealed steel for our FDJ-series drywall frames that are designed to be pressure-fitted to the wall, improving unit life and ensuring durability with less torsion and sagging. Our heavier gauge steel drywall frame means you have the option to weld in stronger 3/16 inch hinge reinforcements to hang heavier wood or metal doors.

As inventors of the hollw metal door, we're welded frame specialists at Mesker, where we offer an expanding variety of frames. From three-sided welded frame units and three-sided welded frames with side lites to borrowed lites and custom-curved, hollow metal welded frames, we've got you covered at Mesker Door.

Mesker provides custom hollow metal curved frames to fit any size, shape or arrangement. Our process curves the length in one continuous piece, eliminating the need for multiple cuts and Bondo© on the finished product.

With Mesker's stick sections, you can order pre-cut and notched, stock components for virtually any specification, including cut & notch frames. Whatever your application - windows, custom wall units, multiple door openings, or side lights with mullions, you'll save time and money because we'll quickly engineer and fabricate stick sections to match the exact tolerances of your project. Once the material reaches your job site, you simply weld together the finished sections. Talk to us about cut & notch frames.

Create custom transom, side light, window, and wall section designs using Mesker's innovative, pre-engineered stick sections. Our distributors can fabricate large custom designs to fit your specifications, including a stick & mullion frame.

Because cleanliness is vitally important in hospitals and senior care facilities, Mesker door offers a hospital stop frame, also known as a terminated stop frame. Our angled hospital stops terminate at three optional heights from the floor - 4, 6 and 8 inches, which creates spaces that are easy to clean. Mops and floor cleaning devices of all kinds can move under the stop, and get rid of bacteria and microbes which cause infection. The hospital stops also provide easier access, by keeping the opening clear, so bed wheels do not catch on the stop of the hollow metal frame when patients are moved in or out of rooms.

Mesker remodeling frames are ideal for any existing wall structure, when you need a replacement frame. Comprised of six individual components, our remodel frames are formed from rigid, 16 gauge or 14 gauge steel, and remodel frames can be ordered in an array of profiles and jamb depths.

The durability and ingenuity of our complete line of hollow metal frames is never more evident than when you're installing them. Our knocked down hollow metal frames are rugged and durable, but can be put into place within minutes. Mesker standard and custom hollow metal frames come ready to install. Frame corners are mitered, and provided with gusset, for easy assembly. Plaster guards are also provided at all hinge and strike locations on F series hollow metal frames, along with rubber mutes, three per strike jamb and two per head in a double swing frame. We'll also provide the anchors you need for your wall conditions.

Our bullet resistant door assembly is designed at close range to deflect up to Level 3 SPSA ammunition as approved by Underwriters Laboratory. Bullet resistant doors are governed by the criteria established in UL 752. Eight levels of bullet resistance are established ranging from small .38 handgun (Level I) to 7.62 high powered military assault rifle (Level VIII). At Mesker, we offer Bullet Resistant Products in Levels 1 through 3.

Our Hurricane Door and Frame Assemblies meet the national standards for hurricanes. The I.C.C. 500 provides the minimum standard for hurricane protection. In addition, Florida Building codes, along with Dade, Broward, and Miami Counties, may specify a higher standard. At Mesker, we have a wide variety of configurations to satisfy varying standards and your personal preferences. Our Hurricane Door and Frame assemblies are approved for High Velocity Hurricane Zones (HVHZ), non-HVHZ's, impact and non-impact zones. We have the solution to your Hurricane opening needs.

Our Mesker Tornado Door/Windstorm assemblies accommodate the standards for safe rooms and community shelters, meeting the "higher practices" standards of the second edition for FEMA 361 out swinging tornado doors. FEMA 361 regulations mandate that all exterior tornado doors for commercial use must swing out. Helping protect your life and property with our quality tornado door FEMA assemblies is what we do as well as anyone in the industry. Ask the Mesker representative in your area for more detail about our tornado doors. And for more on the FEMA 361 guidelines or any FEMA guidelines, visit the FEMA website, using the domain addresses listed below.

The STC (Sound Transmission Class) is a way of measuring how much sound is lost when it travels through a barrier, such as a sound door assembly, also called an acoustical door assembly. The STC rating of sound door assemblies rise as less and less sound penetrates through it. That STC rating is roughly the difference in decibel reduction as the sounds travels from the source, through the barrier, and to the other side of the sound door assembly (acoustical door assembly). So, if 80 decibels of sound went through sound doors and only 50 decibels makes it to the other side, the sound doors are said to have an STC of 30. The graph below gives you an idea of what kind of sound reduction is allowed by each STC door rating.

UNDERWRITERS LABEL
All Mesker UL label hollow metal doors and hollow metal frames are manufactured in strict accordance with the specifications and procedures of Underwriters Laboratories Inc. Adherence to these specifications and procedures is checked by UL through their in-plant inspection service. Our Mesker UL hollow metal doors and hollow metal frames meet every requirement of fire protection. Hollow metal doors are available in 1-3/4 inch thickness for A, B, C, D and E classifications.

FACTORY MUTUAL
All Mesker FM label hollow metal doors and hollow metal frames meet all rigid Factory Mutual regulations for testing quality and design. Providing up-to-date engineering data, and a network of Factory Mutual field inspectors to maintain service and provide maximum protection.

WARNOCK HERSEY / INTERTEK
Mesker Door is listed with WHI to cover virtually all of your national labeling requirements. Warnock Hersey/Intertek monitors and enforces adherence to their procedures by periodic in-plant inspections.

Mesker is proud to support green building and sustainability. LEED, the Leadership in Energy and Environmental Design, is the nationally accepted benchmark for the design, construction, and operation of high performance green buildings and LEED doors. Mesker's LEED doors and LEED frames contribute the maximum number of possible credits for recycled content to the overall LEED certification of the building, under "Materials & Resources: Credit 4 - Recycled Content."