BARON 590 PRO Infrared Freestanding Gas Grill with 820 sq. in. Cooking Surface, 45,000 BTUs Main Burner Output, Infrared Side Burner, Rear Rotisserie Burner, Flav-R-Wave™ Cooking System, 5 Dual-Tube™ Burners, Linear-Flow™ Valves, 180° Sensi-touch™ Control, Sure-lite™ Electronic Ignition System, and Deluxe Accu-Temp™ Thermometer: Natural Gas