Model EHH-401 protects air intake and exhaust openings in exterior walls sensitive to water penetration. The design features a drainable head. Horizontal rain resistant blades provide exceptional resistance to wind driven rain.

  • 4-inch depth
  • 42% free area (4 ft. x 4 ft.)
  • 1,043 fpm free area velocity at the beginning point of water penetration
  • Class A Wind Driven Rain performance


AMCA 500-L Water Penetration, Air Performance and Wind Driven Rain

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