Features: 1. High air volume and high wind pressure 2. Compared with the traditional AC fan, the intersecting surface of the airfoil is relatively stable, the angle difference is small, the blade thickness is thicker, and the operation is more stable. 3. The air volume under the same caliber is larger, which breaks through the limitation of the frequency of the traditional AC fan and greatly increases the fan running speed. 4. Stepless speed regulation, can provide 0-10V voltage speed regulation and PMW signal transmission 5. Compared with the AC pipe fan, the power is lower at the same speed and the energy consumption is lower, thus achieving the effect of power saving 6. Widely used in conference rooms, high-end office buildings, public places, hotels, houses, hospitals, gyms, etc. Specification: Condition: Item Type: EC Motor Ventilation Exhaust Fan Pipe Diameter 8in/200mm Model Voltage Current Power Speed Air Volume Wind pressure V Amps W RPM CFM Pa 8in 220-240 1 110 3500 760 485 8in 100-120 2 110 3500 760 485 Optional Style: 110V, 220V Package List: 1 x Fan 1 x Governor(concealed installation) 4 x Expansion Screw 4 x Screw 1 x Connecting Cable