Three stainless steel burners, WEBER CRAFTED 9mm stainless steel cooking grates, Expandable cooking grate area = 274 square inches, WEBER CRAFTED frame, Total cooking area = 787 square inches, 39,000 BTU-per-hour input main burners, Primary cooking area = 513 square inches, 13,000 BTU-per-hour input SEAR ZONE burner, 12,000 BTU-per-hour input side burner