VEVOR Shutter Exhaust Fan, 16'' with Temperature Humidity Controller, EC-motor, 2650 CFM, 10-Speed Adjustable Wall Mount Attic Fan, Ventilation and Cooling for Greenhouses, Garages, Sheds, ETL Listed VEVOR Shutter Exhaust Fan, 16'' with Temperature Humidity Controller, EC-motor, 2650 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: 2650 CFM,Power Cord: 5.2 ft / 1.6 m,Voltage: EC 120 V / 60 Hz,Color: Black,Model: VV-ECPQS-16,Material: Aluminum Alloy, Powder-coated Steel,Power: 70 W,Certification: ETL,Weight: 13.2 lbs / 6 kgSpecifications:- Length: 52.0 in, Width: 25.0 in, Height: 53.0 in (description exceeds maximum possible length)