- 02
- Mar
metal fire door,ul fire rated door,prehung internal fire door
The materials of Grade B fire doors include wood, steel, steel wood, etc. Class B fireproof door requires that the fire resistance integrity of the door body must exceed 1h. 1.2mm thick electrolytic plate or galvanized sheet shall be used for the door frame, and 0.8mm thick electrolytic plate or galvanized sheet shall be used for the door leaf.
https://ztfiredoor.com/25597.html
metal fire door,fire door manufacturing,fire resistant door,prehung internal fire door,fire door closer,fire protection door,ul fire rated door,hotel doors solid wood composite fire doors,metal fire door,fire place doors,,prehung internal fire door,fire resistance steel door,ul fire rated door,out door fire pit,metal fire door,door commercial exterior fire rated steel doors,ul fire rated door,prehung internal fire door