DuraVent Round Type B Gas Vent Model BV 3" - 4" Appliance Increaser for Rheem and Ruud Appliances h51 This gas vent increaser allows

This gas vent increaser allows you to adapt 3" diameter pipe to 4" diameter pipe when required for your application

Made of malleable dead soft aluminum

Gives your electric fireplace a finished look

Piano-hinged three panel applique design

Model O-54-CR-LS-T2 Material Ceramic

DuraVent Round Type B Gas Vent Model BV 3" - 4" Appliance Increaser for Rheem and Ruud Appliances h51 This gas vent increaser allowsOur non positional lock system on the Duravent BV Gas Vent is the best lock system on the market today. The incorporation of the DuraTab feature simply improves our lock system by adding flexibility and meeting market needs. The BV line of Duravent round vent pipe and fittings is designed for use on approved gas appliances in residential and light commercial and industrial applications. What's Included (1) Appliance Increaser Features Use to increase