Hollow Metal Doors
Our hollow metal door products include 20, 18, 16, and 14 gauge flush doors with a honeycomb, polystyrene or polyurethane core. Embossed 6 or 8 panel hollow metal doors are available in 20, 18, and 16 gauge with either a polystyrene core or the combined honeycomb/polystyrene core (both shown below). Also offered are steel stiffened doors in 18, 16, and 14 gauge. We also have temperature rise doors available in 20, 18, 16, and 14 gauge with a mineral fiber core.
We have doors prepped for hinges and locks or complete blank doors with no hardware preps so we can custom make doors to the necessary hardware locations. We can also do any modification work or repairs to an existing door that you might have. Our shop is well equipped to handle any type of job. We also have a full stock of vision lite kits, 1/4" wire glass, 1/4" clear tempered glass, and louvers that we will install in the door.
We keep the polystyrene core doors in stock but can also bring in the honeycomb, polyurethane, mineral core, and the vertical steel stiffened core. Our 6 and 8 panel doors are available only in A40 or A60 galvannealed steel, all other doors are available cold rolled (non-galv) or A60 galvannealed.
Here is a detailed look at the available door cores for our hollow metal doors. This is also the part the National Fire Protection Association (NFPA) asked us permission to use from this page for an article they wrote "Influence of Gap Sizes Around Swinging Doors". NFPA is an important organization in our Industry and we are glad they came to us to contribute to this article. We are on page 25...it's page 43 in the actual PDF included here as that file includes the "Foreword" section and the TOC.
|DESIGNED FOR STANDARD AND HEAVY DUTY UTILIZATION
Honeycomb enhances the structural integrity of the door while significantly reducing the weight. The core is laminated to both face sheets with contact adhesive. The continuous bonding of core to metal provides a flat door, free of face welding marks.
|DESIGNED FOR INTERIOR USE & EXTERIOR USE WITH HIGH THERMAL QUALITIES
Assembled with solid slabs of polystyrene or polyurethane bonded permanently to the inside of the skin. This type offers security and flexibility in the most adverse conditions. Polystyrene is used on exterior applications in extreme weather conditions while polyurethane is used in artic weather conditions.
|USED IN SOME 6 AND 8 PANEL DOORS
This consists of a polystyrene core with honeycomb around the perimeter. As with the full honeycomb door, the continuous bonding of core to metal provides a flat door, free of face welding marks.
|EXTRA HEAVY DUTY DOOR RECOMMENDED FOR VERY HIGH FREQUENCY UTILIZATION
Constructed with heavy gauge vertical steel stiffeners welded to the face sheets at 4" on center and are located 6" on center horizontally. The areas between the stiffeners are filled with fiberglass. Gloss paint should be avoided on these doors as the welds used to hold the stiffeners in place will show when high gloss paint is used.
|DESIGNED FOR FOR USE IN STAIRWELLS
This consists of a special core designed so the temperature on the non-fire side of a door will not exceed either 250 or 450 degress during the first 30 minutes of a fire. This was brought about due to the fact that people would run down the stairs to evacuate the building during a fire and some would get pushed against a door on the way down the stairs causing them to get burned when contacting the door.