Large cooktop is a generous 27"D. One-piece cast iron grates with 32,000 BTU burners. 38,000 BTU oven burner heats 150°F to 500°F. Porcelainized bottom and door liner with 3-position rack guides and one chrome-plated rack. Griddles have efficient 5/8" thick steel plate with 20,000 BTU burner every 12". Exterior: Stainless steel front, sides, riser, and detachable high shelf. 6" adjustable legs. NSF, AGA, CGA. Warranty: 1 Year Parts & Labor.