The F120 with Sentry Xpress 3-Key Controller is a front loading, Steel Chassis Kiln with Insulating FireBrick and groove mounted elements. It measures 10.75″W x 11.00″H x 7.00″D inside. The F120 Kiln is rated to 1700°F. It fires on 120 Volts and has a NEMA 5-15P Cordset. Solid State Relay with Mechanical Safety Back-up. Rated to 1700 Watts. Blue. Door Switch included.