This brown fire and smoke Intumescent seal has a polypropylene pile brush to stop smoke as well as the standard Intumescent strip. Designed to blend into the door frame. Simple to install, with a self adhesive strip, it can also be cut to size quickly for easy fitting.Fire and smoke Intumescent fire strips are designed to expand in the event of a fire. Placed around a door frame, the heat from a fire causes them to expand and seal the gap between the door and the door frame. The brush works to stop smoke, too. For maximum effectiveness they need to be rebated into the door or door frame. Just part of our fire door accessory range, all of our fire door accessories have been tested to the very highest industry standards for your complete peace of mind. All doors must be fitted in accordance with the fire test. This item is delivered direct to you from one of our suppliers, please see our Terms & Conditions for details.