- 13
- May
fireproof entry door,fire doors for residential homes,en 120 min fire rated door
The 3-hour fire door can be fire-resistant and heat-insulated within a certain period of time. It is usually used in fire partition walls, stairwells, pipe wells, etc. to prevent the spread of fire and the spread of smoke. 3-hour fire doors can be divided into steel fire doors, wooden fire doors and composite fire doors according to the materials used.
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