Selkirk 3" to 4" Appliance Increaser (Round - Type B Gas Vent) manual-3-heat-setting-white a quad-mantle gas lamp or

a quad-mantle gas lamp or GasGlow® LED would produce light equivalent to about two 100-watt incandescent bulbs

and enjoy lifelike flames

modern look for your fireplace or woodstove

Elegant yet rugged

Safe Fire Pits

Selkirk 3" to 4" Appliance Increaser (Round - Type B Gas Vent) manual-3-heat-setting-white a quad-mantle gas lamp orSelkirk 3" to 4" Appliance Increaser 103244 (3RV AI4) Increase 3" to 4" only. Only for use with Rheem Rudd appliances. (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