Suitable for gaps of 2-4mm. When exposed to extreme heat the intumescent has a rapid high-pressure expansion to prevent any fire from spreading. Finished with a brush pile smoke screen to prevent smoke passing through the door frame gap. This intumescent strip has been tested, accredited in the UK and approved use on UK fire doors. Conveniently made with a self-adhesive backing for ease of application. RAPID FIRE RESPONSE: When exposed to extreme heat, our fire-proof door strips, made of intumescent material, undergoes rapid high-pressure expansion, effectively preventing the spread of fire. SMOKE SCREEN: Finished with a brush pile smoke screen, these strips prevent smoke infiltration through the door frame gap, enhancing fire safety measure - in and out of home. FIRE RATING: Approved for use on 30-minute fire doors, providing peace of mind and compliance with safety regulations. SELF-ADHESIVE: Featuring a convenient self-adhesive backing, these strips are easy to apply, saving you time and effort during installation. PACK CONTENTS: Each pack contains 5 white fire and smoke seal intumescent door strips measuring 105cm x 1.5cm x 0.4cm, ideal for sealing gaps and enhancing fire and smoke protection in door assemblies., Manufacturer: EAI