Propane/Natural Gas Convertible Hob with 5 Burners. High Efficiency Sabaf Burners: This gas cooktop features 5 high-efficiency sealed Sabaf burners including a powerful 15000 BTU center burner for boiling, searing, pan frying, and stir frying, along with a 9500 BTU rapid burner, two 6000 BTU semi-rapid burners, and a 3500 BTU auxiliary burner.