Backwards-Curved Plug Exhaust Ventilation Fan Impeller Blower Wheel Airrotor Propeller - NO SCROLL CASE NEEDED

airfoil backwards curved Blower Blower fan centrifugal centrifugal fan cooling cooling fan dc fan electric fan fan high pressure HVAC impeller inlet ring mechanical motorized impeller propeller radial Radial Fan radiator rotor scroll casing turbine Ventilation