Product description:
Size:12/14/16/18/20 Inch
iPower 12/14/16/18/20 Inch Square Automatic Gravity Shutter. Fan blade and motor are not included.
PRODUCT DIMENSION:
12-Inch outer dimension measures 14.96" x 14.96" x 1.38" (Length x Width x Depth), and inner dimension measures 12.32" x 12.32"
14-Inch outer dimension measures 17.72" x 17.72" x 2.36" (Length x Width x Depth), and inner dimension measures 14.96" x 14.96"
16-Inch outer dimension measures 19.29" x 19.29" x 2.76" (Length x Width x Depth), and inner dimension measures 16.54" x 16.54"
18-Inch outer dimension measures 21.26" x 21.26" x 2.76" (Length x Width x Depth, and inner dimension measures 18.50" x 18.50".
20-inch Outer dimension measures 23.43" x 23.43" x 2.76" (Length x Width x Depth), and inner dimension measures 20.47" x 20.47".
- 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.

