Vertical Blade Louvers - EVH-501

Model EVH-501 protects air intake and exhaust openings in exterior walls sensitive to water penetration. The design features a drainable head and vertical rain resistant blades to provide exceptional resistance to wind driven rain. 5-inch depth 54% free area (4 ft. x 4 ft.) 1,250 fpm free area velocity at the beginning point of water penetration Class A Wind Driven Rain performance