Char-Broil Signature TRU-Infrared 525 4-Burner Cabinet Liquid Propane Gas Grill 525 square inches of primary cooking over porcelain-coated cast iron grates 200 square inch porcelain-coated warming rack Four top-ported 443 stainless steel tube burners for lasting performance and better temperature control Surefire Electronic ignition system offers a reliable spark at every burner 13,000 BTU side burner Easily converts from liquid propane(lp) to natural gas(ng) with natural gas conversion kit (sold separately)