Greenheck Introduces High-Performance Drainable Louver

Greenheck’s ESD-635HP, a 6-inch-deep stationary drainable blade louver, is designed to provide high-volume air flow and superior resistance to water penetration. The high-performance ESD-635HP incorporates drain gutters in the head member and each horizontal blade, to channel water to the jambs where it is further channeled through vertical downspouts and out at the sloped sill, protecting building air intake and exhaust openings. Available in single-section sizes up to 48 inches by 48 inches, the ESD-635HP provides more free area (61.5%) on these smaller sizes to complement the company’s ESD-635 drainable louver, and is licensed to bear the AMCA Seal for Water Penetration and Air Performance.

Manufactured of extruded aluminum, Greenheck louvers can be specified with a variety of options in a broad array of architectural finishes for durability and compatibility with adjacent components. For more info, visit