About Master Flow™ Foundation Vent - Automatic

The GAF Master Flow™ 16 in. x 8 in. Resin Automatic Foundation Vent in Black helps reduce moisture that can cause decay in your foundation with a net free vent area of 57 sq. in. The vanes are factory set to automatically open fully at 70°F and close fully at 40°F. Comprised of durable resin construction with UV-inhibitors, the unit easily slips into place and is held in place by tightening the 4 screws in the face of the unit.

This product has earned the Good HouseKeeping Seal.

Features & Benefits

Get automatic Lifetime Protection on your entire GAF roofing system

When you install any GAF Lifetime Shingle and at least 3 qualifying GAF accessories, you'll automatically get a Lifetime limited warranty on your shingles and all qualifying GAF accessories*.
*See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions. The word “Lifetime” refers to the length of coverage provided by the GAF Shingle & Accessory Ltd. Warranty, and means as long as the original individual owner(s) of a single-family detached residence [or the second owner(s) in certain circumstances] owns the property where the shingles and accessories are installed. For owners/structures not meeting the above criteria, Lifetime coverage is not applicable. Lifetime ltd. warranty on accessories requires the use of at least three qualifying GAF accessories and the use of Lifetime Shingles.

Product Documentation

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