This commercial-grade twelve-rack dehydrator from Excalibur (model excode1zonsf) is constructed of high-quality stainless steel and provides a lot of drying capacity fifty square feet, in fact. With 4500 watts of prime dehydrating power the "Comm 1" dries your foodstuffs at an optimal range between 70 degree to 180 degreeF. Excalibur's innovative patented hyperwave technology dries foods and leathers utilizing a "Parallex" air flow, circulating air horizontally; cool air gets drawn in, then heated and wafted evenly across the trays. With its 99-hour digital timer and adjustable fan delay this dehydrator makes it easy to customize drying for optimal results. A money- and time-saving appliance, this unit will enable you to dehydrate meats for jerky and for dog treats, vegetables, nuts, fruits (it's great for roll-ups) you can also make homemade yogurt or even use it to raise bread. Not only made in the U.S.A., this dryer is N.S.F.-approved.