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Pottorff's NEW ECV-345 Louver Features Best-in-Class Wind-Driven Rain and Water Penetration Performance

Pottorff's new ECV-345 3" Vertical Blade Severe-Duty Louver is the only louver in its class on the market which offers maximum protection for both standard water penetration and wind-driven rain. AMCA 540 and AMCA 550 Listed and AMCA Certified for Water Penetration, Air Performance and Wind-Driven Rain.

ECV-345 catalog page
NEW ECV-345 Severe Duty Louver is Best in Class!

The ECV-345 louver is engineered and tested to withstand extreme loads, debris impact, and cyclic fatigue associated with the severe weather effects of hurricanes. The design uses closely-spaced blades and a frame with built-in gutter and downspouts to achieve maximum water infiltration resistance for minimal louver depth. Features industry leading wind-driven rain and water penetration performance.


• AMCA 540/550 Listed

• AMCA Certified for Water Penetration, Air Performance and Wind-Driven Rain

• AMCA 500-L Wind-Driven Rain Test – Class A

Pottorff Announces NEW Louver Insect Screen

Our improved louver insect screen features a top-quality product and a clean appearance. Additionally, we are offering a fully removable and replaceable bird screen option when regular maintenance and cleaning is required. Default insect screen is now fiberglass but we still offer an option for aluminum if required.

NEW Duct Connection Options for our Wood Truss System Dampers

When the CFD-521-IP and CFD-521-NP dampers are configured to close within 1/8” of the top of the gypsum board used in wood truss floor/ceiling and roof/ceiling assemblies, duct connections can now be made on the top of the damper, or any combination of sides of any size. This applies for all standard installations. Additionally, the plenum height can now be extended to allow duct connections in roof/ceiling assemblies with increased insulation to adhere to new, more stringent guidelines.

NEW EFD-635 Drainable Blade Louver Outperforms the Competition!

The EFD-635 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-635 is available in a wide array of anodized and painted finishes including custom color matching.


High Free Area of 60.7%

1250 FPM @ Beginning Point of Water Penetration

AMCA Certified for Water Penetration and Air Performance

View EFD-635 Catalog Sheet