5 panel 20 minute fire rated doors,fire rated shutter door,120 minute fire rated doors

Fire doors can be divided into single-opening and double-opening according to their size. The width of the double-leaf fire door will directly affect its stability, so there will be certain requirements on the width. Depending on the material of the fire door, there will be different requirements for its width, which are based on the premise of not affecting the quality and normal use.

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