Alfresco 42 Inch Grill with 770 sq. in. Grilling Surface, Three 27,500 BTU Burners, Integrated Rotisserie, Smoker and Herb Infuser System, 3-Position Warming Rack, Halogen Lighting, Nickel-Plated Control Knobs and Deluxe Cart: Liquid Propane : Owner's Manual : Page 26