Photo 1 of 20-Inch Square Aluminum Automatic Gravity Shutter Louver Vent BLUE ***ONE SHUTTER IS MISSING SCREW***

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Photo 1 of 20-Inch Square Aluminum Automatic Gravity Shutter Louver Vent BLUE ***ONE SHUTTER IS MISSING SCREW***Photo 2 of 20-Inch Square Aluminum Automatic Gravity Shutter Louver Vent BLUE ***ONE SHUTTER IS MISSING SCREW***Photo 3 of 20-Inch Square Aluminum Automatic Gravity Shutter Louver Vent BLUE ***ONE SHUTTER IS MISSING SCREW***Photo 4 of 20-Inch Square Aluminum Automatic Gravity Shutter Louver Vent BLUE ***ONE SHUTTER IS MISSING SCREW***