The firestop collar INTU FR COLLAR is composed of a flexible insert made of graphite-based material that swells under the influence of temperature above 140°C and an external casing made of 1.0 mm steel sheet protected against corrosion by a red paint coating. The steel collar casing is equipped with a lock used for strapping the ends and stabilizing it on the pipe, as well as mounting brackets fixing the collar to the partition. The collars ensure fire resistance class up to max EI 240