Pottorff has introduced the EDD-637 dual-drainable louver for superior water-penetration performance.

Pottorff has released its 6-in., AMCA-certified model EDD-637 dual-drainable louver, which efficiently prevents 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 EDD-637 louver features 57% free area and a beginning water penetration of 1,113 fpm with pressure loss of only 0 .15 in. wg. for greater fan efficiency.