What is a firestop system?
A firestop system consists of a fire rated wall or floor, a penetrating item (pipe, cable, conduit, etc.) and the firestop sealant. Only the total firestop system is tested and listed by Underwriters Laboratories, Inc., (UL), Underwriters Laboratories of Canada (ULC) and/or Warnock Hersey (WHI), not just the firestop product alone.