DuraVent DuraTech All-Fuel Galvanized Firestop Radiation Shield - For 5" Inner Diameter DuraTech: A vent pipe with a 5" inner diameter is required for this unit. Use this galvanized Firestop Radiation Shield from DuraTech if your chimney installation won't function with a regular ceiling support box. This radiation shield is designed for use with chimney pipes with a 5" inner diameter and will not only protect against chimney fires but will also offer the support needed to construct a secure and stable chimney system. The DuraTech chimney pipes and components are a double wall all-fuel system that can be utilized with gas, coal, wood, or oil-fueled wood stoves, furnaces, boilers, ranges, and water heaters.

Required when a chimney passes through a floor or ceiling without a ceiling support box For use with 5" DuraTech chimney pipes Durable galvanized steel construction Limited lifetime warranty