The Bull Steer Liquid Propane Drop-in Grill Head is contracted with 16 gauge 304 Stainless Steel. It features 3 Staginess Steel burners with a total of 30,000 BTU"s. Included is a warming rack, Grease Tray, built-in trim kit and Zinc knobs, it has 564 square inches of cooking surface. Please contact Bull Outdoor Products at 800-521-Bull(2855) with technical questions.