Check the listing for details. 16 inch Shutter Exhaust Fan Wall Mounted Attic Vent Fan with Smart Program. Condition: New. Listed at 165.04 USD. VEVOR 16 inch Shutter Exhaust Fan, Wall Mounted Attic Vent Fan with Smart Programming Variable Speed Temperature Control, 2900 CFM,EC Motor,Timer, for Shed,Garage,Greenhouse Ventilation Cooling,BlackElectrostatic CoatingSpiral Fan BladesWeather-Resistant BuildRobust HousingFlexible MountingBroad CompatibilityAirflow: 2900 CFM,Noise Level: ≤70 dB(A),Air Speed: 9 m/s,Temperature Rise: ≤70K,Item Model Number: HA-400ME,Item Dimensions: 18.90 x 8.70 x 18.90 in / 480 x 221 x 480 mm,Louver Opening Angle: ≥50-Degree,Net Weight: 14.99 lbs / 6.8 kg,Power: 98W,RPM: 1400 RPM,Main Material: Q235B Carbon Steel,Rated Voltage: 120V~ 60Hz Rain Guard: Shutters open when powered for ventilation and deodorizing, then close when off to block rain and small things, reliab.