Star Burners ExtraLow Feature Cast-Iron Grates All-New Accessories 3-in-1 brass Star Burner. 15,000 BTU/hr and 375 BTU/hr ExtraLow simmer-and-hold capacity. High performance with fast time-to-boil and even heat distribution. Our ExtraLow feature simmers without scorching. Lighter, continuous porcelain-coated cast-iron grates increase air flow and are easier to clean. Thermadors exclusive blue LED lights indicate burner use. MSRP: $2949.00