When a chimney penetrates through a floor or ceiling without a ceiling support box, a ceiling support box is required. Designed to work with DuraTech 6" chimney pipes. Galvanized steel construction is strong and long-lasting. Limited lifetime warranty. A vent pipe with a 6" inner diameter is required for this unit. Even if a support box cannot be utilized, this DuraTech component will keep your vent system running safely at floor or ceiling positions. This firestop radiation barrier is a crucial part of the safety mechanism safeguarding your home from harm during a fire emergency, with a limited lifetime warranty and galvanized steel components. This part goes with DuraTech's 6" all-fuel chimney pipe assembly, which may be utilized with a variety of heating appliances.

Required when a chimney passes through a floor or ceiling without a ceiling support box For use with 6" DuraTech chimney pipes Durable galvanized steel construction Limited lifetime warranty