DuraVent Round Type B Gas Vent Model BV 3" - 4" Attic Insulation Shield w62 U/Hour rating maximum 125

U/Hour rating maximum 125

Decorative Sandstone Brick Panels

trackless doors Will Fit Widths 47" to 50" Will Fit Heights 21 to 23 3/8" Overall Frame Size Width x Heights 51 x 24 *When ordering standard masonry overlap fit doors it is best to go with the smaller frame size

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DuraVent Round Type B Gas Vent Model BV 3" - 4" Attic Insulation Shield w62 U/Hour rating maximum 125Our 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) Attic Insulation Shield Features Required for