The FD-1018 Gardenmaster Pro Dehydrator is Nesco / American Harvest's top of the line dehydrator. In fact, the Gardenmaster Pro Deyhdrator is more powerful and larger than any other. The Gardenmaster Pro Dehydrator can expand to an enormous 30 trays, which allows extremely large quantities of dehydrating! 1000 watts ensures you complete drying capabilities. In addition, 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. Flavors simply won't be mixed, and you don't ever have to rotate trays!