The high quality 18" 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. Our burner also comes with a convenient 1/2 inch gas inlet for easy connection to a natural or propane gas supply.