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Model EAC-401 is an extruded aluminum combination louver-damper with drainable style blades and concealed damper linkage within the louver jambs. 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
• 40% free area (4 ft. x 4 ft.)
• 1,192 fpm free area velocity at the beginning point of water penetration