Set precise temperature and drying time for consistent results with the digital controls. A quiet, 2,400-rpm fan and 1,000 watts of drying power means you can dry more, faster. This means there is no need for tray rotation. The adjustable 90-160°F thermostat gives you the flexibility to get the best results. The 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. This unit expands to 20 trays so you can dry large quantities all at once! A bonus Clean-A-Screen and fruit roll sheet included.