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® Storm Collar, 5 in, Aluminum, Finish: Galvanized, 1-9/16 in H x 8-5/8 in W, Additional Information: For Use With Model BV Type B Gas Vent System, DuraLock® and DuraTab® Locking Device

• Used to provide a weather-proof seal to pipe above roof line
• Used above the flashing
• Seal inner edge with hi-temp silicone sealant