Model EXA-645-CM

6" Deep, 37-1/2 ° - 45 °
Combination Blade

The EXA-645-CM combination louver features stationary drainable louver blades to protect against water penetration and an integral airfoil blade control damper to allow positive shutoff protection of air intake and exhaust openings. The EXA-645-CM closely reflects the available options and performance of the EXA-645, with the added benefit of a spring return actuator concealed within the louver sill.

Standard Construction

Standard Construction
Material: Mill finish 6063-T5 extruded aluminum.
Frame: 6" deep x 0.081" thick (152 x 2) channel.
Blades:
Front: 37.5° x 0.081" (2) thick drainable style.
Back: 45° x 0.125" (3) thick operable airfoil 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.
Actuator: 2-Position spring return, AC universal power (24V, 120V, 240V).
Bearings: Synthetic.
Mullion: Visible.
Minimum Size: 18" x 18" (457 x 457)
Maximum Size: Single section: 60" x 96" (1524 x 2438)
                          Multiple section: Unlimited

Ratings

Design Load: 25 psf
 
Operation
At maximum size, this louver is designed to open and close at a minimum of 1,000 fpm @ 1.0 in. wg. pressure loss.
Operating Temperature Range: -20°F to +180°F (-7°C to +82°C)