The I-CE Locking Systems Intumescent Self Adhesive Kit for 3L Sash/Bath lock is designed to enhance the fire resistance of door locking mechanisms for fire-rated doors, aiming at achieving a fire resistance level of FD60. The kit includes a series of black intumescent strips, self-adhesive for convenience, catering to lock sizes of 50/63/75mm. The components are crafted from a special intumescent material that expands when exposed to high temperatures, sealing any gaps and preventing the spread of fire. The self-colour finish indicates that the components have a natural appearance without additional coatings, which is typically the color of the base material without any added finishes like paint or plating.