Unlike freezing or canning your foodstuffs, dehydration is simple and quick: just slice, dry and then bag your items. This 10-tray dehydrator from the Excalibur company (model res10) has twin glass doors, allowing users to monitor the drying procedure without the necessity of opening the doors and letting the heat escape. This model also features easy-to-use, intuitive controls, making a sophisticated process quick and easy. The temperature range is 29.4 degree-73.9 degreeC (or 85 degree-165 degreeF) and the temperature can be set individually in either of the two "zones" of the cabinet (a simple barrier partition separates the zones. You can also set two distinct time intervals with the included 99-hour timer: a warmer interval for rapid drying and a cooler interval for the gradual dehydration that helps you avoid case-hardening, caramelizing, or cooking your food items. Up to 30 drying protocols (a.k.a. recipes) can be set and saved. This superb 550-watt dehydrator has trays measuring 11.4" x 14"; and it is made-in-U.S.A.