Specification Model: HC400A2 Material: Aluminum Alloy Color: Silver Power: 280W Voltage: 220V Rated Speed: 1440rpm Noise: Less than or Equal to 56dB(A) Operating Environment: -5? Insulation Grade: B Gross Weight: 11kg/24.25lbs Net Weight: 10kg/22.04lbs Package Size: 302820cm/11.8111.027.87in Product Size: 25.513.521.2cm/105.38.4in Items included 1Oil-free Vacuum Pump 4Rubber Feet 1Silencer All Accessories Needed for Installation.