A. Genuine fire doors must prevent the spreading of fire and smoke from one area of a building to another.
Ordinary fire doors, which have coated kraft paper infill, are only able to withstand exposure to heat for a short period of time before deteriorating. In contrast, FEDERALS fire doors have mineral rockwool infill, which is a non-toxic, fireproof material with a melting point of 1,600 degrees Celsius. Mineral rockwool comes from natural basalt rock silicate material and does not emit harmful toxic fumes when exposed to flame.
Because of the mineral rockwool infill, FEDERALS fire doors have been certified by Underwriters Laboratories to have a maximum fire rating of three (3) hours. The UL Certifications Online Directory contains data for:
- Swinging-Type Fire Doors
- Swinging-Type Fire Doors, Positive Pressure Tested
- Fire Door and Window Frames
Moreover, FEDERALS fire doors can be packaged with two types of seals, which are to be installed on the jamb rabett. Intumescent seals will keep out fire, while rubber smoke seals will prevent smoke from entering. The smoke seal is particularly crucial in preventing asphyxiation from smoke, which is the most common cause of death in fires.
Mineral rockwool infillB. Genuine fire doors must allow firemen to easily enter the room.
Ordinary doors will twist and warp under extreme heat. Accessories of these, such as hinges, welded stiles and jambs are also prone to warping. As a result, the door is sealed shut, preventing firemen from entering.
In contrast, FEDERALS fire door leaves are 46 mm. thick and constructed from reinforced skin shell produced from 1.2 mm. and 1.6 mm. galvanized steel sheets. The internal frame is carefully designed, such that it will maintain dimensional stability at high temperatures.