Manual operation, Sterilization and separate drying cycles feature automatic shutoff, Stainless steel chamber ensures long life and easy cleaning. Stainless Steel door with double safety locking device. Dual safety thermostats to protect against overheating of heating elements in case of insufficient water in the chamber. Drain valve located on the front, allowing for quick drainage of water reservoir. 1-year parts and labor warranty, 10yr chamber warranty. External Dimensions: 21.5"x20"x14.4" Trays: 9" Chamber size: 3 trays 10" Chamber Size: 4 trays Chamber Capacity: 9": 5 Gal 10": 6 Gal