Introducing Our Round Burners A 30″ Stainless Steel Fire Pit Ring for high capacity, uniquely designed with staggered ports for a better flame pattern and to help keep water from accumulating in the burner ring. 3 Concentric Rings 30″ Diameter with 3/4″ hub  All Stainless Steel For optimal flame height, we recommend at least 250,000 BTU Available for natural gas or LP Liquid propane. (For LP Liquid Propane you must add   air mixing orifice   to reduce sooting).