1. Purpose

This standard establishes uniform laboratory test methods and performance requirements for water rejection capabilities of louvers intended to be used in high velocity wind driven rain conditions.

2. Scope

Tests conducted in accordance with the requirements of this standard are intended to demonstrate the acceptability of the louver in which water infiltration must be kept to manageable amounts during a high velocity wind driven rain event. Passing this test keeps water infiltration to manageable amounts of water. Design considerations behind these louvers should include provisions for collecting and draining the water as well as proper waterproofing of all materials and equipment that reside behind these louvers.