Model EFK-637

Extruded Aluminum Louver
6" Deep - 37-1/2" Degree K-Blade

The EFK-637 extruded aluminum louver is designed for intake and exhaust application where protection against water infiltration is not critical. The EFK-637 is well suited for special shape applications and is available with hidden mullions for a continuous blade appearance of multiple section assemblies. The EFK-637 is available in a wide array of anodized and painted finishes including custom color matching.

Standard Construction

Material: Mill finish 6063-T5 extruded aluminum.

Frames: 6" deep x 0.081" thick (152 x 2) channel.

Blades: 37-1/2^o x 0.081" (2) thick K-style.

Screen: 1/2" x 0.063" (12.7 x 1.6) expanded and flattened aluminum.

Mullion: Visible.

Minimum Size: 4.5" x 9" (114 x 229)

Maximum Size:
Single Section: 60" x 120" (1524 x 3048) or 120" x 60" (3048 x 1524)
Multiple Section: Unlimited

Ratings

Free Area: 8.7 ft² (0.81 m²)

Performance @ Beginning Point of Water Penetration

Free Area Velocity: 1157 fpm (5.88 m/s)

Air Volume Delivered: 10102 cfm (4.77 m³/s)

Pressure Loss: 0.17 in. wg. (42 Pa)

Velocity @ 0.15 in. wg. Pressure Loss: 1096 fpm (5.57 m/s)

Design Load: 30 psf