Rep Login (817) 509-2300
blue background, a set of control and backdraft dampers standing out
white paper
Pottorff > Louvers and Penthouses > Louvers and Architectural > Non-Drainable > EFJ-645

Model EFJ-645

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

The EFJ-645 extruded aluminum louver is designed for intake and exhaust application where protection against water infiltration is not critical. The EFJ-645 is well suited for special shape applications and is available with hidden mullions for a continuous blade appearance of multiple section assemblies. The EFJ-645 is available in a wide array of anodized and painted finishes including custom color matching.

EFJ-645 6" Deep - 45 Degree J-Blade

Standard Construction

Material: Mill finish 6063-T5 extruded aluminum.

Frames: 6" deep x 0.081" thick (152 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.

Mullion: Visible.

Minimum Size: 4.5" x 9.5" (114 x 241)

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: 1115 fpm (5.87 m/s)

Air Volume Delivered: 9359 cfm (4.42 m3/s)

Pressure Loss: 0.18 in. wg. (44 Pa)


Design Load: 30 psf

Click to view or check box to add to cart