The main purpose of Class A fire doors is to avoid the spread of fire when there is a fire. These are generally full steel plate fire doors, which can protect for 2 hours when there is a fire.

ZHTdoors yong’inga qarshi eshiklar, yong’in eshiklari va derazalarida 31 yillik ishlab chiqarish tajribasi. Asosiy UL yong’in eshiklari, EN yong’in eshiklari, BS EN yong’in eshiklari va boshqalar.