Steel Doors 101
Steel Thickness (Levels)
#86 hardware prep includes a 1-1/4″ wide x 8″ tall edge cutout to accept cassette style mortise locks. Function hole prep for #86 mortise locks can be done in the field or added as a shop modification for an additional charge.
#RPD prep includes internal reinforcement for surface mounted exit device hardware. Function holes and trim prep can be added in the field or as a shop modification for an additional charge.
Galvanneal / Galvanized Steel Doors
STC Sound Resistant Doors
Double Egress Doors
Door Edges (Models)
Model 2 hollow metal commercial steel doors with the “Seamless” designation include vertical edge seams that have been welded, filled and primed smooth for a seamless finish.
Ballistic / Bullet Resistant Doors
Tornado Resistant Doors
Fire Rated Doors
Hurricane / Impact Doors
Lead Lined Doors
Embossed Panel Metal Doors
Honeycomb: Corrugated honeycomb stiffener with open air space. Low insulating value. Provides slightly higher dent resistance than polystyrene.
Polyurethane: Formed in place foam core for maximum insulating value and increased dent resistance. Typically a made-to-order product for most commercial door manufacturers.
Steel Stiffened: Vertical steel stiffeners are placed inside the door for added strength and durability. Designed for high frequency severe traffic doors and high impact doors. Open space is usually filled with mineral fiber insulation to reduce thermal and sound transmission.
Temperature Rise: A full body mineral fiber board core limits the transfer of heat between the exposed and non-exposed sides of a door during a fire.