Extruded Aluminum Louver
6" Deep - 37.5-45 Degree Combination Blade
The EXA-645-MD is engineered and tested to withstand extreme loads, debris impact, and cyclic fatigue failure associated with the severe weather effects of hurricanes (Miami-Dade County approval #21-1122.05). When closed, the EXA-645-MD also protects against high-velocity winddriven rain per AMCA 550. The design features stationary drainable louver blades to protect against water penetration and an integral airfoil blade control damper to allow positive shut-off of air intake and exhaust openings. The EXA-645-MD is available in a wide array of painted finishes including custom color matching, and may be ordered with a variety of factorymounted electric or pneumatic actuators.
Material: Mill finish extruded aluminum.
Frames: 6" deep x 0.125" thick (152 x 3) channel.
Front: 37.5o x 0.081" (2) thick drainable style.
Back: 45o x 0.162" (4) 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.
Low Leakage Seals: TPV blade edge and flexible metal jamb.
Minimum Size: 12" x 12" (305 x 305)
Single Section: 60" x 120" (1524 x 3048)
Multiple Section: Unlimited width x 120" height
Free Area: 7.7 ft2 (0.72 m2)
Leakage: Class 2
Performance @ Beginning Point of Water Penetration
Free Area Velocity: 1076 fpm (5.46 m/s)
Air Volume Delivered: 8281 cfm (3.91 m3/s)
Pressure Loss: 0.12 in. wg. (31 Pa)
Velocity @ 0.15 in. wg. Pressure Loss: 1184 fpm (6.02 m/s)
Design Load: 120 psf
Operating Temperature Range: -20oF to + 180oF (-7oC to + 82oC)
AMCA 540 and 550 Listed
AMCA Certified for Water Penetration and Air Performance
Miami-Dade Country Approved: NOA No. 21-1122.05
Florida Building Code Approval (2020 FBC): No. FL21051
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