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The only one manufacturer in China which can supply FM/WHI Approval Fire Rated DoorsFire rated time: 3hrs, 1.5hrs, 45minutes
Steel: Cold-rolled or galvanized steel skin 16GA/18GA/20G
Infilling: Polystyrene or honeycomb
Leaf thickness: 1-3/4''=44.5mm
Hinge reinforcement? 10GA=3.5MM
Closer reinforcement: 12GA=2.5MM
Lock reinforcement: 16GA=1.5MM
Strike plate reinforcement: 16GA=1.5MM
frame type: Welded or kncok down frame
Construction type: Double rabbet, single rabbet, cased opening
Connection for masonry wall: Wire anchor, tube anchor, universal stud anchor
Connection for drywall: Compression anchor
Lock type: Cylindrical lock or mortise lock
