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DORMA Intumescent Packs for Single and Double Action Floor Springs.
Read moreDORMA Intumescent Packs provide a 60 Minute Fire Rating for FD60 Fire Doors. For use with DORMA Single or Double Action Floor Springs. Select the 4052109997 intumescent pack for use with single action floor springs with a 5mm or 36mm offset, or use the 4052109998 intumescent pack with the BTS double action floor springs, such as the BS80EMB and BTS80F.