Fire Doors Are Common

- Feb 14, 2019-

Fire doors are common in many public buildings, particularly theaters, and are also an integral component of marine vessels. These doors usually are made of heavy timber or other material, overlaid with steel. The frame is lined with fireproof gaskets so that when the fire door is closed, an air-tight seal is maintained. Fire doors are rated according to how many hours they can withstand a fire before they collapse or burn through.