scope:

This publication outlines the application of louvers, including selection for pressure drop, air leakage, water penetration and sound reduction. Examples of louver selection are included. "System Effects," An important section in this publication, should not be overlooked when applying performance data (see Section 7). For information on testing, see Section 6.1; for information on certified ratings, see Section 6.2.

Common industry practices in louver construction, mounting and suggested fastening methods for typical structures have been included to assist the installer.

Purpose

The intent of this publication is to provide information and important points to be considered when designing or specifying installations requiring louvers. The purpose of this manual is not to provide detailed specifications; rather, it serves as a guide toward understanding the various types of louvers available and includes topics to be considered to ensure their proper use.