The Nesco Gardenmaster digital pro food dehydrator is Nesco's "Top of the Line" unit. The patented Converga-Flow fan forces heated air up the exterior pressurized chamber, then horizontally across each individual tray, converging in the center, for fast, even and nutritious drying. 1000 watts of drying power with top-mounted fan means you can dry more, faster No flavor mixing and no need for tray rotation Converga-Flow drying system ensures even drying—dries food in hours, not days Digital adjustable thermostat Auto off timer—48-hour maximum timer at 30 minute intervals Expands to 20 trays with TR-2 Add-A-Tray accessories (sold separately) Includes 4 trays, fruit roll sheet and clean-a-screen Measurements: 16 Width/Inches, 16 Length/Inches, 11 Height/Inches Base Material: 100% Plastic Care: Dishwasher Safe Parts Intended Location: Refrigerator Country of Origin: Imported