Ultra-Quiet Fan Each Dehydrator Tray Measures 14 1/4 x 10 3/4 - 36.2 x 27.3 cm Over 10 square feet of dehydrator tray drying space Food easily releases from dehydrator tray Color-coded thermostat adjusts from 84 to 155F (29 to 68C) 600 watt heating element with a 5 1/2 (14cm) diameter ultra-quiet fan Rear mounted drying system circulates air from back to front through each dehydrator tray...tray rotation not required Solid ABS thermoplastic construction