- Make sure this fits by entering your model number.
- Balanced shutters for complete automatic service-free operation
- Installs centered on joist with 18″ or 24″ centers with 2 cut openings, 1 on each side of center joist per shutter model.
- Fits Fan # WHFS24M – 24″
- Opening Size Required: 27.25″ x 28.25″
- White Enamel Finish – Interior use.
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Injection molded frame with smooth aluminum louvers that automatically open when fan turns on, and close when fan turns off to keep out air, insects, and dust. Interior Use.