The only one manufacturer in China which can supply FM Approval Fire Rated Doors

steel: cold-rolled or galvanized steel skin 16GA/18GA/20GA

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