VEVOR Shutter Exhaust Fan, 14'' with Temperature Humidity Controller, EC-motor, 1513 CFM, 10-Speed Adjustable Wall Mount Attic Fan, Ventilation and Cooling for Greenhouses, Garages, Sheds, ETL ListedPowerful EC MotorSmart ControllerAutomatic ShutterHeavy-duty PerformanceSimplify InstallationVentilate AnywhereRotating Speed: 1600 RPM,Air Volume: 1513 CFM,Power Cord: 5.6 ft / 1.7 m,Voltage: EC 120 V / 60 Hz,Color: Black,Model: VV-ECPQS-14,Material: Aluminum Alloy, Powder-coated Steel,Power: 30 W,Certification: ETL,Weight: 10.8 lbs / 4.9 kg