20 Volt furnace with digital controller. Requires 20 Amp dedicated line. Insulated with space-age ceramic fiber for fast heating and cooling at low electrical cost. The firing chamber is 13"W x 13"D x 9"H (33 x 33 x 23cm), large enough for volume jewelry making. Fires 1700 F (967 C), so you can also use them for low-fire ceramics, enameling on metal, china painting or glass fusing. A heavy steel case protects the firing chamber for long life, and the chamber is supported by a double-layer steel bottom. The base lifts the furnace off of the work surface, and the door peephole and top vent-hole are sealed with metal covers when not in use. The door remains tightly sealed, even at high temperature, with a spring-loaded latch. Reaches 1000 F (538 C) in 30 minutes. This digital control model uses a DTC-800 controller, eliminating the need for a pyrometer. With this feature-packed temperature controller, you can program up to eight ramps (raising or lowering the temperature at the rate you specify) and eight dwells (holding the temperature constant for the length of time you specify). Uses a type-K thermocouple, long proven for its reliability. The controller will shut off automatically should the thermocouple ever fail, and the controller stores up to six programs even if the power shuts off. Two year warranty. Shipping weight 108lbs. This item will be shipped to you directly from the factory, please allow 5-7 business days for shipping.