The gap between the door and the frame is extremely important and must be suitable for the intumescent seal fitted.
In general the gap should not exceed 3mm along the 2 long edges and across top of the door leaf.
To facilitate checking of the gap on site,a BWF-CERTIFIRE Scheme GapTester is available free of charge on request.
The gap at the bottom of the door is usually around 10mm* for non-smoke conditions BUT 3mm when smoke seals are required.
Located in a port city, China Dalian Golden House Door & Window Manufacture Co., Ltd. is a large-scale enterprise specialized in producing American-Standard steel fire doors and wooden fire doors. Our company produces 50000 sets of steel fire doors and 20000 sets of wooden fire doors every year. Our fire door products have passed UL Approvals AND FM Approvals and INTERTEK(WH) approval successively. Moreover, our fire door products can be sold directly to more than 20 countries over North America, Latin America, Middle East and Africa.
We respond to tendency of international fire doors market, and provide good service combining foreign clients' needs, with an aim of expanding a wider international market. In the future campaign for world market, our foreign trade elites will achieve better sale performance through unremitting efforts and dedication.
please get into the contact with servicer if need to learn more on the product price and size forcustomized service . also please contact us on alibaba
