... noise 3)High technical,energy saving 4)Copper motor automatic poultry equipment ,animal husbandry equipment,ventilator,poultry ... every customer.Wet pad and ventilation fan system is the best cooling system widely used in many places ... 1000*4000.55 shutter, frame, wind set, fan blade are galvanized9FJ-1000B1100*1100*4000.759FJ-1250B1385* ... 13869686531 First class quality poultry house cooling fan GL brand