1,long life; 2,high quality motor; 3,low-noise; 4,fashionable design. Exhaust fan,ventilating fan and ventilation fan are available. Quality exhaust fanGood in quality, moderate in price and attactive in type:Noiseless, strong wind, copper-wire Oil bearing motor.Full PP plastic or half plastic type(Equipped with strengthened PP plastic for the front cover and iron back cover). exhaust fan