Metal-Fab Type B-Vent 3" to 4" Housing Adapter d23.25 if you want to upgrade

if you want to upgrade then select this optional Premium Safety Barrier Assembly

This burner system includes an Oxygen Depletion System to quickly shut off the gas if room oxygen levels drop to unsafe levels

it is the vapors of the alcohol-based fuel that burns to give you a clean burn

warrants its aluminum chimney lining systems for two (2) years from the date of end-user installation

The control also features a post purge function (3 min) to evacuate the chimney system of residual flue gases after the appliance shuts down

Metal-Fab Type B-Vent 3" to 4" Housing Adapter d23.25 if you want to upgradeType B Gas Vent products are tested and listed to UL 441 for approved gas appliances and feature our innovative twist lock connection and locking tab, eliminating the need for sheet metal screws. Metal Fab Type B Gas Vent combines hemmed flues and casings that maximize product durability and reliability and minimize installation time. Designed for versatility, Metal Fab Type B Gas Vent products 3" 6" adapt to major competing brands and when installed