If you plan to use propane for your gas fire pit you will need an air mixer and a burner pan, while also making sure your propane line uses a  regulator. An air mixer is necessary because propane needs to mix with air to create a clean, efficient fuel. The burner pan is necessary to ensure the proper amount of spacing for your air mixer to gather air to mix with the propane, allowing proper burning. Also, the burner pan is designed to prevent fuel from settling below the pan and burner; failure to utilize a burner pan when on LP gas, could result in personal injury or explosion. Please see our instructional video for more details.