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Pottorff > Louvers and Penthouses > Louvers and Architectural > Combination > EXD-645

Model EXD-645

Extruded Aluminum Louver
6" Deep - 37.5 - 45 Degree Combination Blade

The EXD-645 combination louver features stationary drainable louver blades to protect against water penetration and an integral control damper to allow positive shutoff protection of air intake and exhaust openings. The EXD-645 is available in a wide array of anodized and painted finishes including custom color matching. These units are also available with a variety of factory mounted electric or pneumatic actuators.

EXD-645 6" Deep - 37.5 - 45 Degree Combination Blade

Standard Construction

Material: Mill finish 6063-T5 extruded aluminum.

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

Blades: 37.5o and 45o x 0.081" (2) thick combination style.

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

Axles: 1/2" (13) diameter steel hex.

Linkage: Concealed in frame.

Low Leakage Seals: TPV blade edge and flexible metal jamb.

Bearings: Synthetic.

Minimum Size: 12" x 12" (305 x 305)

Maximum Size:
Single Section: 48" x 96" (1219 x 2436) with low leakage seals or 60" x 96" (1524 x 2436) without low leakage seals
Multiple Section: Unlimited


Free Area: 7.1 ft2 (0.66 m2)


Performance @ Beginning Point of Water Penetration

Free Area Velocity: 1050 fpm (5.33 m/s)

Air Volume Delivered: 7455 cfm (3.52 m3/s)

Pressure Loss: 0.19 in. wg. (48 Pa)


Velocity @ 0.15 in. wg. Pressure Loss: 950 fpm (4.82 m/s)

Design Load: 30 psf

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