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4"5"6" bathroom ventilating fan/air change fan/exhaust fan/ventilator1.Material: ABS,PP; 2.Professional high-performance electric motor,use the import material, 100% pure copper coil,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,4"5"6"8"10"12" is available; 5.Power:25W,30W,40W, 6.Voltage:110 250V 7.Packing:5pcs/Carton;