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.
Material: Mill finish 6063-T5 extruded aluminum.
Frames: 6" deep x 0.081" thick (152 x 2) channel.
Blades: 37-1/2o 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
Free Area: 8.8 ft2 (0.81 m2)
Performance @ Beginning Point of Water Penetration
Free Area Velocity: 996 fpm (5.06 m/s)
Air Volume Delivered: 8809 cfm (4.16 m3/s)
Pressure Loss: 0.14 in. wg. (32 Pa)
Velocity @ 0.15 in. wg. Pressure Loss: 1039 fpm (5.28 m/s)
Design Load: 30 psf
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