4" Deep Wind Driven Rain Louver

is a wind driven rain tested 4" deep louver with a drainable blade feature to channel water away from the blades. If you need open ventilation and your building location is in an extreme weather location, this model is the right choice. For more weather protection and air intake applications, use model E4WH or E6WH.

The Wind Driven Rain series will handle conbinations of high wind and rain with minimal entrainment of water:


  • Made to order in sizes 12" wide x 12" high up to unlimited size
  • Made from heavy gauge 0.081" thickness aluminum extrusion
  • 4" frame depth, channel frame
  • 4.25" blade spacing
  • Blades horizontal
  • Internal Screen (Bird Screen)


  • 56.0% free area for a 48" wide x 48" high louver
  • 95% effectiveness against wind driven rain at 346 fpm free area velocity
  • 30 psf wind load design
  • 3.90 pounds per square foot average weight
  • Wind Driven Rain performance tested to 29 mph wind at 3" rainfall rates


  • A variety of metal finishes including paint and anodizing
  • Insect Screen (replaces bird screen)
  • Mounting: flange frame, glazing channel frame, "J" channel frame
  • Special shapes for architectural appeal
  • Higher wind load ratings
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