Selkirk 3"/4"/5" Double Wall Increaser (Round - Type B Gas Vent) Size:5" to 6" Same as RCK-K

Same as RCK-K

Model 8DWB24  Application Designed for installations from the appliance/stove to high-temperature chimney products

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⮞ What kind of fuel should I use

Selkirk 3"/4"/5" Double Wall Increaser (Round - Type B Gas Vent) Size:5" to 6" Same as RCK-KSelkirk 3" 4" 5" Double Wall Increaser (Model RV Type B Gas Vent) Used to increase pipe diameter. (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 draft. Galvanized outer provides protection against outdoor elements. Product line includes DWC Double Wall Connectors and EFC Expandable Flex Connectors.