Selkirk 3" to 4" Appliance Increaser (Round - Type B Gas Vent) manual-3-heat-setting-white our 1/4" black reflective fire

our 1/4" black reflective fire glass hints at impeccable taste and this is the impression it will create in the minds of all visitors when your customers use it in their fire feature

sheet metal screws

Designed to adapt hard pipe to flex in power vent applications

and enjoy lifelike flames

Selkirk 3" to 4" Appliance Increaser (Round - Type B Gas Vent) manual-3-heat-setting-white our 1/4" black reflective fireSelkirk 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