This 36-inch square drop-in burner pan comes with a convenient lip so that it can easily be inserted into your square fire pit and then removed after use. Fire pit pans give fire pits a false bottom which significantly reduces the amount of fire glass you will need for your display because the pan creates the illusion that the entire fire pit is full of fire glass, whereas only the top portion of it is. You will get an amazing fire display with minimal fire glass! Also included is a 18-inch ring burner so there is no need to buy any additional parts. The 18-inch Fire Ring is rated for 147,000 BTUs and is made from durable 304 stainless steel. This high quality 18-inch fire pit ring burner is designed to delight all onlookers with its amazing flame. The double concentric ring design increases the overall diameter of the burner, allowing for a truly realistic and evenly distributed flame. Furthermore, the burner holes have been drilled, not punched, which means no whistling noises are produced. This burner also comes with a convenient 1/2-inch gas inlet for easy connection to a natural or propane gas supply. Note: Must use propane air mixer to convert to liquid propane.