Horizontal Blade Louvers - EHH-401

Model EHH-401 protects air intake and exhaust openings in exterior walls sensitive to water penetration. The design features a drainable head. Horizontal rain resistant blades provide exceptional resistance to wind driven rain. 4-inch depth 42% free area (4 ft. x 4 ft.) 1,043 fpm free area velocity at the beginning point of water penetration Class A Wind Driven Rain performance