Applications: roof air-conditioners, cabinet air-conditioners, duct fan units and other similar usages Power: 10W 200W Number of pole: 4 poles, 6 poles, 8 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 IP level: IP20, IP44 Mounting: bracket or steel ring mounting, or other diversity choices Packing: Carton or pallet