The structure of the door is determined according to the requirements of the door.
Fire rated door components.
Fire leaf as the main parts of the door.
Fire rated doors are made of wood common or fire resistant metals galvanized metal or steel that have been insulated rock wool mineral wool perlite etc.
Lexington manufacturing is a trusted fire door component manufacturer with capabilities of producing 20 and 45 minute commercial fire rated door components including stiles rails and cores available in a variety of sizes and finishes.
The fire resistance of the door depends on it.
Fire rated door components.
In north american building codes it along with fire dampers is often referred.
A fire door is a door with a fire resistance rating sometimes referred to as a fire protection rating for closures used as part of a passive fire protection system to reduce the spread of fire and smoke between separate compartments of a structure and to enable safe egress from a building or structure or ship.
The door itself is usually made from a solid timber frame but they can sometimes be covered again in fire resistant glass.