iPower 20-inch Square Automatic Gravity Shutter Louver Vent, Silver

About this item PRODUCT DIMENSION: This 20-Inch Automatic Gravity Shutter’s outer dimension measures 23.43" x 23.43" x 2.76" (Length x Width x Depth), ideal for home, garages, and greenhouses – check the product image for detailed product dimensions. WEATHER AND PEST PROOF: Precision manufacturing that the louvers can 100% fully close to prevent water from entering. Heavy duty and precision structure enable this Shutter to withstand tropical storm conditions including hurricanes and tornados. FUNCTIONAL: Automatically open and gravity close. This shutter accompany with an iPower motor and fan blade can help to cool your space and remove excess heat, moisture and dust. CAUTION: This Automatic Gravity Shutter is sold alone, does not include the exhaust fan blade and motor. Only the louvers are aluminum,the frame is steel