Drainable Louvers Pottorff’s drainable-blade louvers are 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. They are available in a wide array of anodized and painted finishes including custom color matching.
EFD-445 — Drainable Fixed
EFD-635 — Drainable Fixed
n Free Area: 60.7% n Free Area Velocity: 1,250 fpm n Pressure Loss: 0.20 in.wg. n AMCA Certified for Water Penetration and Air Performance
n Free Area: 50.4% n Free Area Velocity: 1,026 fpm n Pressure Loss: 0.16 in.wg. n AMCA Certified for Water
Penetration and Air Performance
EFD-637 — Drainable Fixed
EFJ-437-HP — Drainable J
n Free Area: 57.5% n Free Area Velocity: 1,113 fpm n Pressure Loss: 0.15 in.wg. n AMCA Certified for Water Penetration and Air Performance
n Free Area: 56.3% n Free Area Velocity: 912 fpm n Pressure Loss: 0.14 in.wg. n AMCA Certified for Water Penetration and Air Performance
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