Vacuum Oven Convection Type Vacuum Temp Range (C) 10 Degrees to 220 Degrees Overall Height 20.5 in Overall Width 28.2 in Overall Depth 26.25 in Temp Accuracy +/-3.5 Percent of set point Chamber Height 12 in Chamber Width 12 in Chamber Depth 20 in Voltage 120 V Watts 1 600 W Capacity (Cu.-Ft.) 1.7 Preheat Time 90 min to 150 Degrees C Number of Doors 1 Number of Shelves 3