Labels:anechoic chamber | shelf OCR: Rain Defense AMCA 500-L is the current louver test standard that includes Water Penetration and Wind Driven Rain test criteria Water Penetration Test refers to the test method that uses "Still Air 33 The velocity at which .01 ounces water passed through the louver European equivalent to the Water Penetration test, only the Wind Driven Test. Wind Driven Rain Tests New to the US test standard with wind pressure applied to face of louver They are loosely based on European test standards generated DV HEVAO Effectiveness Class is the new water penetration classification used for Wind Driven Rain. HEVAC
