FM/WHI Approval Fire Rated Time US Standard
180minutes,90minutes, 45minutes fire rated time
steel: 16GA/18GA/20GA cold-rolled or galvanized steel skin
infilling:polystyrene or honeycomb
panel thickness:1-3/4''thickness
hinge reinforecement:10GA=3.5MM
closer reinforcement:12GA=2.5MM
lock reinforcement:16GA=1.5MM
strike plate reinforcement:16GA=1.5MM
frame: welded or knock down frame
type: double rabbet,single rabbe,cased opening
connection for masonry wall: wire anchor,tube anchor,universal stud anchor
connection for drywall: compression anchor
lock: cylindrical lock or mortise lock