Ramblewood High Efficiency 4 Burner Natural Gas Cooktop, Sealed Burner GC4-50N Clearance SALE!!! Natural gas type......FREE SHIPPING. 4 sealed burners. Electric ignition, 110V AC input. Max. Power per burner: 12000 BTU + 9000BTU + 7000 BTU + 3000 BTU LPG/Propane conversion nozzles(4 pcs) included Stainless steel surface with heavy cast iron pot stand, One simmer burner allow slow cooking. Safety device with thermal couple & flame out failure detection trigger mechanism. Auto shut off gas supply. One year warranty.