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- Jan
EN fire door price,fire door door closer,fire resistant door sliding
Fire doors are classified as Class A, Class B and Class C. Class A fireproof door is full steel plate, which can protect for 70 minutes. Class B fireproof door is made of all steel, which can protect for about 50 minutes. Part of Grade C fireproof doors are made of wood and can be protected for about 35 minutes.
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