Selkirk 3" to 6" Quick Grip Firestop Spacer (Round - Type B Gas Vent) Size:5-Inch Back Width: 27"

Back Width: 27"

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Model MST Application For use with category I natural gas-burning or propane-fired appliances such as gas boilers

Selkirk 3" to 6" Quick Grip Firestop Spacer (Round - Type B Gas Vent) Size:5-Inch Back Width: 27"Selkirk 3" to 6" Quick Grip Firestop Spacer (Model RV Type B Gas Vent) Used to support and protect combustible materials where the pipe passes through a ceiling. NOTE: UL listed model includes an attached spacer ring to ensure 1 clearance to combustibles. (RV) Round Type B Gas Vent Model RV Double Wall Gas Vent is the installer's choice for residential, industrial and light commercial applications. The aluminum liner heats up quickly to promote strong