The GAF Master Flow™ Ridge Vent is easy to install and helps provide ventilation at the most effective location on the roof - the ridge. Durable aluminum construction with built-in baffle helps ventilate the attic while helping to prevent moisture infiltration. Each vent provides 21.5 sq. in. (per lin. ft.) of net free ventilating area (NFA).

This product can be used to comply with certain FORTIFIED Roof™ requirements. Visit gaf.com/fortified and current FORTIFIED Home™ Standard available at fortifiedhome.org for details. Applicable in the U.S. only.