The Grand Canyon 3 Burner is ANSI Z21.60-2012/CSA2.26-2012 certified with a safety pilot system as well as CGA 2.17-M91 R2009 certified for High Altitudes. Our US and Canada certifications allow for the burners to be safely installed and burned in both countries. These certified burners are tested to withstand the heat and are built to produce heat. The chassis of the burner is built out of 304 stainless steel and have the ability for the gas to flow in on either side of the burner depending on where your gas inlet is located at. The design of the burner features and elevated back burner that stretches across the entire back of the burner allowing for a bigger taller flame, a middle burner that rolls over the front log simulating a real burning log and finally and ember burner that give the look of falling coals that light up the ground. With many different log sets to choose from, Grand Canyon Gas Logs has developed a propriety design that allows for you to raise and lower the back tines depending on the size of your firebox and log style that you choose. Grand Canyon Gas Logs offers a complete array of valve system accessory that are able to fit the burn. Includes Lava rock, fittings, flex line and embers damper clamp. Features BTU 91K. Indoor/Outdoor Use. Fuel Type Liquid Propane. 100% Stainless Steel construction. Use with logs AWO, AJ, ASPEN, BPS, MSO, WO Logs Not Included . Fits 42 LG Prefab Fireplace. Specifications Grate Tynes 1 . Burner Dimensions 30 W x 14 D . Grate Dimensions 30 FW x 22 BW x 8 H . Minimum Floor Dimensions If installing Masonry 42 FW x 28 BW .