Poultry/Greenhouse/Livestock Equipments Industrial Ventilation /Exhaust Fan Shutter:with a centrifugal system is used which can ensure the shutter open and close autimatically, and makes it dustproof,waterproof in centrifugal industrial ventilation/exhaustfans.Motor: high efficient and energy-saving mator with protection grade: IP55, insulation class:F for industrial ventilation/exhaustfansBelt: Autimatic tensioner is adopted in industrial ventilation/exhaustfansto prevent the belt loosinganddropping off ModelDiameter Blades (mm) Air VolumePowerOuter size (mm) VoltageFrenquencyETXS-1000100035000m3/h0.75KW1100X1100X450380V/220V50HZ/60HZETXS-1250125042000m3/h1.1KW1378X1378X450380V/220V50HZ/60HZETXS-1400140055800m3/h1.5KW1536X1536X450380V/220V50HZ/60HZ