From Cabelas Site:"The Pro series is the first line of Cabela's smokers approved for use by professionals. If they're good enough for the professionals, just think how good they'll be preparing your favorite smoked foods. Both models are NSF-approved for commercial processing facilities. They have an all-stainless steel interior, 1,200° insulation and a dual-zone heating element for roasting or smoking. Smoke meats using sawdust, pellets or chips for mouth-watering results that could be mistaken for a professional meat shop. These 1,250-watt electric smokers run on a 120-volt household current with a heating output that ranges from 60°-250°. Easy-to-read digital LED readout makes for precise cooking. Versatile 3" top and door dampers allow for extra smoking control. Heavy-duty, locking casters come standard on Smokehouse Pro models. Insulation gasket on door seals in heat. One-year limited warranty."