- 09
- Jan
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Fire doors are with glass Windows, this fire door observation window requirements and class A fire door fire requirements consistent. Float plane glass, tempered glass and composite fire proof glass can be selected to meet the fire prevention requirements. The fire resistance value of class A fire door is not less than 1.5 hours, class B fire door is not less than 1 hour, and class C fire door is not less than 0.5 hours.
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