Directional louvers allow for airflow to be directed in one of two directions. In contrast to louvers, our Opposed Blade Dampers (Non-Directional) allow for the volume of airflow to be controlled without changing direction.
Note: It is not practical to install both a damper and directional louver in a single duct opening. We recommend choosing either/or. If control of air volume is more important, choose the damper; If control of direction is more important, choose the louver.