Our 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.

DuraVent® Tall Cone Flat Flashing, 10 in, Aluminum, Finish: Galvanized, 24-1/8 x 24-1/8 in Base, 24-1/8 in Length, 11 in Width, 11 in Height, Additional Information: For Use with Type B Gas Vent System, DuraLock® Locking Device

• Used on flat roofs in snow packed areas to reduce chances of snow covering the vent
• The flashing with a tall cone fits flat to 1/12 roof pitches