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fire retardant timber door with 4″hinge,30 minutes fire rated wood door,prehung black internal wood formica fire door

Wooden fire doors are made of special wood. The thickness of the door frame and the connection of the door fan have strict requirements. Even in humid areas, wooden fire doors will also use water-resistant phenolic resin glue to achieve waterproof and moisture-proof effect.

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fire retardant timber door with 4″hinge,30 minutes fire rated wood door,prehung black internal wood formica fire door-ZTFIRE Door- Fire Door,Fireproof Door,Fire rated Door,Fire Resistant Door,Steel Door,Metal Door,Exit Door