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China factory UL 30 60 90 120 mins optional fire rated double doors resistant door frames details firewall door on China WDMA for UK
Product Description Products Pictures Certifications UL Standard UL 10(b), UL 10(c), UBC 7-2, NFPA, ASTM Filler Material Honey Core, Mineral rock wool, polyurethane core. Fire rated time 1 hour up to 3 hours. Size UP to 2.52*2.52m (Max) Surface finish Door leaf and frame powder coated finish. Opening Swing, Inward/Outward Color...
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