VEVOR 12 inch Shutter Exhaust Fan, Wall Mounted Attic Vent Fan with Variable Speed Controller, 1100 CFM, AC Motor, Heavy-duty Steel, Low Noise for Shed, Garage, Greenhouse Ventilation Cooling, BlackElectrostatic Powder CoatingCurved Fan BladesDurable Construction for All Weather ConditionsDurable and Sturdy CasingVersatile Installation OptionsWide Range of CompatibilityAirflow: 1100 CFM,Noise Level: ≤60 dB(A),Air Speed: 6.7 m/s,Temperature Rise: ≤70K,Item Model Number: AMX-FAGAC12,Item Dimensions: 14.96 x 14.96 x 7.09 in / 380 x 380 x 180 mm,Louver Opening Angle: ≥50-Degree,Net Weight: 7.83 lbs / 3.55 kg,Power: 58W,RPM: 1600 RPM,Main Material: Q235B Carbon Steel,Rated Voltage: AC 120V 60Hz