Applications: fan coil units of centralized air-conditioners Power: 8W 150W Number of pole: 4 poles, 6 poles Speed choice: by wire, single speed or multiple speed (6-speed to the most) Power supply: 110V / 220V / 230V, 50Hz / 60Hz, or designed upon special requests Insulation class: B class, F class Construction: steel shell, aluminum end frame and ball bearing Mounting: bracket mounting with rubber vibration absorber Packing: Carton or pallet