DuraVent Round Type B Gas Vent Model BV 4" x 5" Increaser w4 Replacement/upgrade gas burner (When purchasing

Replacement/upgrade gas burner (When purchasing a lamp

Model S20i Firebox Height 20

Natural gas to propane

Fits on the underside of ceiling

DuraVent Round Type B Gas Vent Model BV 4" x 5" Increaser w4 Replacement/upgrade gas burner (When purchasingOur 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) Increaser Features Use to increase vent