All commercial properties must be inspected annually by the National Fire Protection Association. The underwriters laboratory agency decides whether any specific door model reaches the fire resistance ratings acceptable. The fire ratings for doors are based on time.
GH's metal doors (both single and double doors) ratings consist of 20 minutes, 45 minutes, 90 minutes or a 3-hour rating. GH's fire rated wood doors come with three options: 20, 45 and 90 minute ratings.
These time-based tests are based on the timed exposure of flames the door and assembly can handle; examining the hardware, wall and door assembly as written in the building code standards. The doors are put into a large furnace to properly test the door against its specific rating.
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
