20 Inch Automatic Exhaust Shutter Louver Vent, 2Pcs Aluminum Gravity Shutters Louver for Windows Outside, Home Attics, Greenhouse Vent

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About This Automatic Shutter Louver Vent: YAGEANNL Shutter vents for outside windows are carefully made of high-quality aluminum, easy to install and maintain, sturdy, corrosion-re sistant, and keep the surface clean and smooth 2Pcs Shutter Vent Size: 20 inch automatic gravity blinds, the dimensions of each are 23.6 x 15.7 x 3.9 inches / 60 x 40 x 10 cm, including 2 shutter vents. Very suitable for home, workshop, warehouse, greenhouse use Gravity Shutter Louver Vent: The gravity shutter vent has 10 blades that open automatically with the airflow and close by gravity to suit different ventilation needs. Closeable Protective Shutter Bents: Precision-made shutter vents can be completely closed, effectively blocking wind, rain, and insects. High-quality manufacturing makes this shutter vent effective in protecting against bad weather. Only Two Shutter Vents: Note that this YAGEANNL automatic shutter vent is sold separately and does not include the exhaust fan blades and motor. Show more