This brown fire only intumescent strip combines fire safety with a discreet look that blends into the door frame. Intumescent fire strips are designed to expand in the event of a fire. Placed around a door frame, the heat from a fire cases them to expand and seal off the gap between the door and the door frame. Just part of our fire door accessory range, which ensures that you follow the necessary safety guidelines. All of our fire door accessories have been tested to the very highest industry standards for your complete peace of mind. These standards vary depending on many factors, therefore all doors must be fitted in accordance with the fire test.