Automatic Foundation Vent

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av-ra-001
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Automatic foundation vents have a thermal spring that is controlled by temperature. At approx 70F the vents open to allow ventilation of moisture in your crawlspace. At 40F the vent closes to keep out the cold.

ABOVE - Watch this video to learn how to install your automatic foundation vent.



In the above image, the manufacturer illustrates possible problems that foundation vents resolve.