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Pottorff > Louvers and Penthouses > Louvers and Penthouses > Non-Drainable > EFJ-445

Model EFJ-445

Extruded Aluminum Louver
4" Deep - 45 Degree J-Blade

The EFJ-445 extruded aluminum louver is designed for intake and exhaust application where protection against water infiltration is not critical. The EFJ-445 is well suited for special shape applications and is available with hidden mullions for a continuous blade appearance of multiple section assemblies. The EFJ-445 is available in a wide array of anodized and painted finishes including custom color matching.


EFJ-445 4" Deep - 45 Degree J-Blade

Standard Construction

Material: Mill finish 6063-T5 extruded aluminum.

Frames: 4" deep x 0.081" thick (102 x 2) channel.

Blades: 45o x 0.081" (2) thick J-style.

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

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: 8.1 ft2 (0.75 m2)


Performance @ Beginning Point of Water Penetration

Free Area Velocity: 781 fpm (3.97 m/s)

Air Volume Delivered: 6317 cfm (2.98 m3/s)

Pressure Loss: 0.10 in. wg. (24 Pa)


Velocity @ 0.15 in. wg. Pressure Loss: 971 fpm (4.93 m/s)

Design Load: 30 psf

AMCA Certified for Water Penetration and Air Performance


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