Technical Data : Chamber Size mm(W*D*H) : 250x300x250 Power supply : 220V/5.5KW “Type  : Benchtop/Front-loading, Automatic” “Max Temperature 1200℃ (2192℉)” “Continuous working temperature 1200℃ (2192℉)” Heating Element : op brand iron-aluminum alloy resistance coil wire (HRE) embedded in three sides of the wall (Elements located in ceiling, left and right sides) Chamber material : 1. Adopt high quality 1300 degree alumina polycrystalline fiber, which used Japanese technology (vac-sorb forming alumina polycrystalline fiber) with good insulation and durability properties Instruction Manual