Fire Doors

Fire Doors are unique in their manufacturing, their installation and their inspection. Choosing a company that is trained in the proper installation and inspection process is critical to helping to you provide the safety and security you expect. Fire doors fall categories include:

swinging > horizontal sliding > sliding special purpose > vertically sliding > rolling steel > fire shutters > service counter > hoistway doors for elevators and dumbwaiters; chutes; and access.

Fire Ratings by Hour & by Letter-Designation:

• Class “A” (3-hour)-Openings in firewalls that divide a single building into fire areas.
• Class “B” (1 hour)-Openings in enclosures of vertical shafts and stairwells through buildings and in 2 hour rated partitions providing horizontal fire separations
• Class “C” (3/4 hour) – Openings in walls or partitions between rooms and corridors having a fire resistance rating of 1 hour or less.
• Class “D” (1 1/2 hour) – Openings in exterior walls subject to severe fire exposure from outside the building.
• Class “E” (3/4 hour) – Openings in exterior walls subject to moderate or light fire exposure from the outside of the building.
• No letter designation (1/2 or 1/3 hour) – Openings in walls or partitions between rooms and corridors having a fire resistance rating of 1 hour or less. Note that these doors are not really considered fire doors, but rather used for smoke control only.