Selkirk 3" to 4" Appliance Increaser (Round - Type B Gas Vent) manual-3-heat-setting-white sheet metal screws

sheet metal screws

Chimney pipe must be centered within Close Clearance Shield

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

Elegant yet rugged

Decorative ball handles

Selkirk 3" to 4" Appliance Increaser (Round - Type B Gas Vent) manual-3-heat-setting-white sheet metal screwsSelkirk 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