Louver Selection and Application

Abstract

Standard louvers: These are the standard horizontal blade models that have been available for many years. Typically, they are 4 to 6 in. deep and are examined in the AMCA "still-air" water-penetration test. These models feature fairly wide blade spacing that can provide good free area and pressure-drop performance. However, their wide blade spacing makes them far less effective at rain protection than wind-driven-rain-resistant models.