Fire Door 6
Fire Door 6 :
A fire door is a door with a fire-resistance rating (sometimes referred to as afire protection rating for closures) used as part of a passive fire protection system to reduce the spread of fire or smoke between compartments and to enable safe egress from a building or structure or ship. In North American building codes, it, along with fire dampers, is often referred to as a closure, which can be derated compared against the fire separation that contains it, provided that this barrier is not a firewall or anoccupancy separation
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