American Gas Lamp Works Bavarian 1200W 21" Weather Green Residential Wall Mount Aluminum Propane Gas Lamp With Triple Inverted Gas Mantle Light Assembly, Flat Tempered Glass Panes and Brass Urn Finial btu106000 The co axial vent system has OPT RGLPC48FSEN SLV LP The co axial vent system has the exhaust pipe within the air intake pipe which protects any surrounding combustible material from the high temperature of the flue gases as well as preheating the outside air prior to it being introduced to the combustion process The ability to choose from a selection of brick kits and numerous optional media kits offer the particular homeowner freedom of design choiceVersatile and Flexible located in the collar of the fixture Wall Mount Spec Sheet