Firestop Collars are used as fire protection for PVC and other plastic combustible pipes that penetrate through a fire rated wall. A Fire Collar for PVC pipes will provide the proper fire protection for a penetrating pipe while maintaining the wall/ceiling/floor's 1 or 2 hour Fire Rating. Firestop Collars contain an intumescent strip of firestopping material which will expand and char if it hits an elevated temperature due to fire. When the plastic pipe melts away, the fire collar will fill the void and block smoke and flame from passing through the penetration. Intumescent Collars are quick and easy ways to pass municipal fire inspections when installing PVC piping or exhaust pipes through fire-rated walls such as garage walls/ceilings.