Harper Oven Model# MD242429BKA1600F, S/N AW019 High temperature Harper Box Kiln with atmosphere system. Rated 1650 deg. C. (3000 deg. F.). Primary power 480 volts, 60 Hz, 3 ph. 125 amps, Accessory power 30 amp. Cooling water 5 GPM. Air 150 CFH @ 30 PSI, Nitrogen 150 CFH @ 17 PSI, Forming 20 CFH @ 17 PSI. Inside dimensions 29" wide x 32" deep x 20" high. Built 1997. (Operations manuals included)