Model EFD-637 extruded aluminum louver 6" deep • 37½° drainable blade


The EFD-637 drainable blade louver is designed to prevent water penetration in non-wind-driven rain applications by collecting water in frame and blade gutters and channeling it into downspouts and away from airflow paths. The EFD-637 is available in a wide array of anodized and painted finishes including custom color matching.