DuraVent Round Type B Gas Vent Model BV 3" - 4" Appliance Increaser btu135000 The powerful dual-element fixtures provide

The powerful dual-element fixtures provide concentrated heat for larger-scale applications

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For newer hearth products with IntelliFire™ or IntelliFire Plus ignition systems

Tank Regulator

DuraVent Round Type B Gas Vent Model BV 3" - 4" Appliance Increaser btu135000 The powerful dual-element fixtures provideOur 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