80 x 36 metal door,83 x 36 metal door,36×84 metal door
Fire doors are divided into normally closed fire doors and normally open fire doors. The normally closed fire door is closed under the effect of door closer; Therefore, when a fire breaks out, it can prevent the spread of fire smoke. The normally open fire door is open under the effect of door closer. When a fire breaks out, the switch will be released actively, and the fire door closer will be closed under the effect of door closer and alignment device.
36×84 metal door,fire door vs normal door,fire rated door kick plate,80 x 36 metal door,83 x 36 metal door,
fire resistant door manufacturer,36×84 metal door,fireproof main door,fire proof door material,80 x 36 metal door,fire rated door thickness,steel door x,fire rated door 2 hour,fire rated door 90 minute,83 x 36 metal door,
wooden fireproof doors,36×84 metal door,metal door 36 x 80,fire rated door ul,fire rated door residential