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The steel fire door has good air tightness, and is closed in place and tightly. The gap between the doors will not allow the air conditioner and heater to overflow. The advantages of steel fire doors make them occupy a large market share in public buildings.

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fire rated door handles,ul oversized fire rated door,fire rated interior doors-ZTFIRE Door- Fire Door,Fireproof Door,Fire rated Door,Fire Resistant Door,Steel Door,Metal Door,Exit Door