industry exhaust fan

fanindustry fan/ventilating fan/air change fan/exhaust fan/ventilator 1.Body Material: Metal, the fanbladeisaluminium or plastic; 2.Professional high-performance electric motor,use the import material, 100% pure copper coil,copper-clad aluminium conductor, and aluminium conductoror faster speed, strong wind, long-lived, well-balance and low noise. 3.High-class design,savingenergy and durable,Ingenious shape,safe and super-silent; 4.Specification,8"10"12"14"16"20" is available; 5.Power:30W,35W,46W,60W,130W,250W; 6.Voltage:110 380V 7.Packing:5pcs/Carton;