- 20
- May
20 minute fire rated exterior door,20 minute fire rated door with glass,AS fire rated door components
Fireproof doors not only have the function of ordinary doors, but also have the function of preventing the spread of fire. In case of a fire, the fire door of the stairwell can prevent the penetration, diffusion and spread of fireworks within a certain period of time, which will save valuable time for fire escape.
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