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This is a mill-finish aluminum cover that mounts over a standard 16 in. x 8 in. foundation vent to keep leaves, rodents and insects out of the crawlspace while still letting air through. It installs by nailing to floor joists or as a foundation block replacement, and the aluminum body resists corrosion. Springs are included for the louvered flap. At $14.37 at Max Warehouse as of November 4, 2026, it sits at the low end of its recent range, with 4 stores listing it new.
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Lowest price we've seen: $14.37 on Nov 4 at Max Warehouse. Tracked across 4 stores since Nov 4.
Buyers describe it as an easy, low-cost fix for crawlspace problems, with several saying it was exactly what they needed. Complaints center on installation: the hook hole sometimes needs enlarging, and at least one hook broke while being closed.
An alternative to our Foundation Vent Kit . This streamlined version of our foundation vent cover eliminates the exterior resin frame and the ability to close off the vent, but offers a functional and visually stunning option to cover foundation openings in warmer climates.
8x16 grille with ABS backer in your choice of pattern and finish. Masonry screws included.
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