... 2 hour to 4 hours2. Fire core: vermiculite 3. Door skin: galvanized steel for steel fire door or plywood or MDF board ... for wooden fireproof door.4. Hardware: fire proof hinges, fire proof lock, door closer, panic bar ... Nam, Saudi Arabia ,Australia, Iran ,Macao.9, single leaf door, double leaf door (optional.) fire door /fire proof door/fire proof door