This high-performance Brown Intumescent Strip (20mm x 4mm x 2.1m) fits onto the edge of fire doors to seal the gap between the door leaf and the frame. It contains intercalated graphite that reacts to extreme heat by expanding multi-directionally up to 15 times its original size. The expanding material fills the clearance gap around the door to create a tight barrier that prevents flames and smoke from passing through, slowing the spread of fire throughout the building. The seal meets British Standards and is Certifire approved.

Key Features

• Provides cold smoke protection by sealing the gap around the door, whilst also offering thermal and acoustic insulation benefits
• Expands up to 15 times its original size when exposed to heat to seal the gap between the door and the frame
• Intercalated graphite core activates during a fire to create a dense insulating barrier
• Helps maintain the function of fire doors by sealing perimeter gaps
• Installed in routed grooves in fire doors or frames
• Ideal for use with FD60 fire doors

Technical Information

• Seal type: Fire & Smoke
• Thickness: 4mm
• Width: 20mm
• Finish: Brown
• Length: 2.1m

Approvals

• Certifire approved: CF846
• BS 476-31.1:1987
• BS 476-22:1987
• TS35
• TS21