Model EHV-901D is a stationary dual-module wind driven rain extruded aluminum louver with horizontal front blades and vertical rear blades designed to protect air intake and exhaust openings in exterior walls. EHV-901 is AMCA 540 Listed for wind-borne debris impact and AMCA 550 Listed for High Velocity Wind Driven Rain.

  • 9-inch depth
  • 54% free area (4 ft. x 4 ft.)
  • 974 fpm free area velocity at the beginning point of water penetration
  • Class A Wind Driven Rain Classification


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

AMCA 540 Test Method for Louvers Impacted by Wind Borne Debris (Basic Protection, Missile D and Enhanced Protection, Missile E)

AMCA 550 High Velocity Wind Driven Rain

Florida Test Protocol: TAS 201 Large Missile Impact

Florida Test Protocol: TAS 202 Uniform Static Air Pressure

Florida Test Protocol: TAS 203 Cyclic Wind Loading

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