GAF Master Flow LW1 Grill Style 16 in. x 8 in. Mill Aluminum Foundation Vent
Best price now
$11.21at Lowe'sChecked 2 h ago
56% under what the other stores charge
Compared across 6 stores. Prices are checked against each store and labelled with when.
56% under what the other stores charge
Compared across 6 stores. Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The GAF Master Flow LW1 is a grill-style foundation vent made of die-cast mill aluminum. It provides 50 sq. in. of net free vent area to move air through a crawlspace and cut moisture buildup that rots wood. A screen keeps pests out and a manually adjustable damper lets you tune airflow by season. It nails to floor joists or drops in as a block replacement, so it fits both new work and retrofits. Compared with plain plastic or stamped-steel vents, the cast aluminum body holds up better outdoors, though it costs more than basic units.
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Lowest price we've seen: $11.21 on Nov 14 at Lowe's; highest $339.00 on Nov 4. Tracked across 6 stores since Nov 4.
The GAF Master Flow LW1 is a grill style foundation vent. It allows air to circulate, which reduces moisture and helps prevent decay in the foundation. It has a net free vent area of 50 sq. in.
It includes a screen and a damper, and the damper adjusts manually.
Install it by nailing it to the floor joists, or use it as a block replacement.
