Overall dimensions: 18.81" (47.8 cm) L x 15" (38.1 cm) W x16.44" (41.8 cm) H Countertop area: Minimum depth 18" (45.7 cm) Chamber size:: 9" (22.9 cm) Dia x 15" (38.1 cm) D, 3.5 gal. usable volume (13.4 liters) Trays: Two large - 12" L x 7.31" W x .88" D (30.5 x 18.6 x 2.2 cm) Two small - 12" L x 5.62" W x .88" D (30.5 x 14.3 x 2.2 cm) Unit Weight: 70 lbs. (31.8 kg) Shipping Weight: 78 lbs. (35 kg) Water reservoir capacity: .88 gal. (3.3 liters) Electrical: 120 VAC, 60 Hz, 12 AMPS 120 VAC has 1425 watt tubular immersion heater UL and CUL Listed CSA Certified 220-240 VAC, 50-60 Hz, 7 AMPS 220-240 VAC has 1500 watt tubular immersion heater 100 VAC, 50-60 Hz, 15 AMPS 100 VAC has 1425 watt tubular immersion heater A separate (dedicated) circuit is recommended for this sterilizer.