Model ECD-601 is an extruded aluminum combination louver-damper with drainable style blades and rear blade linkage, which allows ECD-601 to be manufactured in larger individual panel sizes than similar concealed linkage products. 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.

• 6-inch depth
• 46% free area (4 ft. x 4 ft.)
• 1,035 fpm free area velocity at the beginning point of water penetration