automatic foundation vent

Automatic Foundation Vent

SKU:
av-ra-001
Availability:
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$44.95
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Weight:
3.00 LBS
Current Stock:
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Description

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.