Model EX-645

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

The EX-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 EX-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.

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: PVC blade edge and flexible metal jamb.
Bearings: Synthetic.
Mullion: Visible.
Minimum Size: 12" x 12" (305 x 305)
Maximum SizeSingle Section: 48" x 96" (1219 x 2438) with low leakage seals
                                                    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