Self Adhesive Intumescent Fire Rated Door Weatherstripping is a soft ,extruded linear gap seal for use in conjunction with soffit hear details or other situations where a smsll gap requires fire sealing.When exposed to flames and heat,KideRubber Fire Strip undergoes controlled expansion or intumescence,reacting to form a carbonised foam.This char resists the passage of smoke and flames and helps to insulate the metal channel beneath.