Firestop Intumescent Fire & Smoke Door Seals Brown 15mm x 4mm x 2100mm 10 Pack (5979J)

Intumescent fire seals expand in the event of a fire, sealing off the gap between the door and the frame, preventing the spread of fire and smoke. Combined fire and smoke seal prevents the spread of smoke prior to the fire seal activating. Features low friction brush pile to aid door closing. For maximum effectiveness, rebate into either the door or the door frame. As a guide, only use 15mm seals on new doors and 10mm seals for replacement or retrofitting, and always check fire door manufacturer's inst... - Manufacturers part number: 5979J