DuraVent Round Type B Gas Vent Model BV 3" Quick Grip Firestop / Support btu140000 The logs that you are

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Selkirk 3"/4" Horizontal Termination Adapter

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DuraVent Round Type B Gas Vent Model BV 3" Quick Grip Firestop / Support btu140000 The logs that you areOur 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) Quick Grip Firestop Support Features Used to