bathroom ventilation fan: 1.household exhaust fan; 2.100% copper wire motor; 3.high quality PP& ABS material; 4.large air. bathroom ventilation fan :1.household exhaust fan;2.100% copper wire motor;3.high quality PP& ABS material;4.large air volume.5.high intensity,long service life;6.more easily kept clean7.exhaust effectively indoor polluted air,wet gas, smoke,dust,etc. bathroom exhaust ...