Tomshoo 16-Inch Aluminum Automatic Gravity Shutter Louver Vent Silver

PRODUCT DIMENSION: This 16-Inch Automatic Gravity Shutter’s outer dimension measures 19.29 x 19.29 x 2.76 (Length x Width x Depth) ideal for home garages and greenhouses – check the product image for detailed product dimensions. HIGH-QUALITY ALUMINUM: Product made from high-quality aluminum that it’s durable and never corrosion or rust maintain a neat and smooth surface. WEATHER AND PROOF: manufacturing that the louvers can 100% fully close to from entering. Heavy duty and structure enable this Shutter to withstand tropical storm conditions including hurricanes and tornados. FUNCTIONAL: Automatically open and gravity close. This shutter accompany with an motor and fan blade can help to cool your space and remove excess heat and dust. CAUTION: This Automatic Gravity Shutter is sold alone does not include the exhaust fan blade and motor.