The Hamilton Beach 78450 Proctor-Silex Commercial Food Dehydrator and its 10 trays are made of stainless steel for durability and food safety and has 16 square feet drying area. The high-performance heater has 1200 watts of power and the precise temperature/time settings provide consistent results. Auto shutoff timer offers up to 15 hours of drying time. Simply input drying time & temperature using the chart as a guide; dehydrator automatically turns off when time is up. The innovative slide-back door gives you instant access to the interior, making it easy to load trays and check on food no need to remove the door. The horizontal airflow fan system provides thorough, even drying over all 10 trays. Removable tray holders and fan screen plus seamless bottom make cleaning easy. This item measures 15.8 inches in height by 21.5 inches in width by 17.8 inches in depth. Rpms: 1750 @ 60 Hz, 120v/60/1-ph, cETLus, NSF. 1 year warranty