Selkirk-Metalbest Metalbest RV 3" Type B Gas Vent Roof Support Assembly

3" Type B Gas Vent Roof Support Assembly from the RV Collection This support assembly includes a support plate and cleat, and should be installed above the joist. It also serves as a firestop and will suppor a maximum of 60' of gas vent. The RV series offers round gas vent pipe and fittings for residential, commercial and industrial applications. It features a snap together, non-positional lock system, die formed ends, and eliminates the need for all cutting, fitting and special engineering. It has an im...