Model EAD-401 is an adjustable extruded aluminum louver with drainable style blades. When in the open position this louver functions as a conventional louver while providing tight shut off from air and other elements when in the closed position. This product is most often provided with factory-mounted and adjusted electric actuators.
4-inch depth
36% free area (4 ft. x 4 ft.)
Above 1250 fpm free area velocity at the beginning point of water penetration
