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


AMCA 500-L Water Penetration and Air Performance

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