3 stainless steel burner. Heat-efficient, durable porcelain-enameled lid with built-in thermometer. Individual electronic ignition system. 2 stainless steel work surfaces. 637 sq. in. total cooking area. 25 years warranty on aluminium castings and shroud. 10 years on burner tubes, 5 years on grates, bars grates and 2 years on all remaining parts.