Air Vent 54703 Automatic Gable Shutter, White

Louvers open outside when gable fan is running, louvers close when gable fan shuts off. Made of plastic to prevent rust. To be used with model #'s 53315, 53316, 53319 & 53320.

• Prevent rust
• Automatically opens when the power fan is running and then closes when the fan is not running
• Rough opening is 16" x 17-3/4".

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