Non-Drainable Blade Louvers - ESJ 401

Model ESJ-401 is an extruded aluminum stationary non-drainable louver that protects air intake and exhaust openings in exterior walls. The design incorporates J-style blades, sloped sill and a hidden vertical mullions when configured as multiple sections wide.

4-inch depth

53% free area (4 ft. x 4 ft.)

691 fpm free area velocity at the beginning point of water penetration