ventilator fan,exhaust fan,roof fan 1. low noise,low cost,cooper 2.strong air flow 3.Blade guard for safey,copper wire poultry equipment fan,equipment fan,exhaust fan,ventilation fanItemFP15-6-1FP20-6-2FP25-6-3Size(mm/in)200/8250/10300/12Motor66*1066*1266*14Voltage220V-240V 220V-240V220V-240VFrequency:50Hz-60Hz 50Hz-60Hz50Hz-60HzWattage(W)283846Airflow(m3/h)4867201080Speed(r/min)125012001050Noise ...