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Model EXV-640
Extruded Aluminum Louver
6" Deep - 40-45° Combination Blade
The EXV-640 combination louver is engineered and tested to withstand debris impact and water infiltration associated with severe weather effects of hurricanes. It features stationary vertical louver blades in front to protect against rain, and an integral control damper in the rear to allow positive shutoff of air intake and exhaust openings.
Standard Construction
Material: Mill finish 6063-T5 extruded aluminum
Frame: 6" deep × 0.081" (152 × 2) thick channel
Blades (Front): 45° × 0.05" (1.3) thick vertical chevron style
Blades (Back): 40° × 0.14" (3.6) thick airfoil style
Screen: 1/2" × 0.063" (12.7 × 1.6) expanded and
flattened aluminum
Axles: 1/2" (13) diameter plated steel hex
Linkage: Concealed in frame
Low Leakage Seals: TPV blade edge and flexible metal jamb
Bearings: Synthetic
Minimum Size: 12" × 12" (305 × 305)
Maximum Size:
Single section: 60" × 120"(1524 × 3048)
Multiple section: Unlimited
Shipping Weight (approximate): 10 lb/ft² (49kg/m²)
Ratings
Free Area: 42.7%
Performance @ Beginning Point of Water Penetration
Free Area Velocity: 1,250 fpm (6.35 m/s)
Air Volume Delivered: 8,563 cfm (4.04 m3/s)
Pressure Loss: 0.30 in.wg. (75 Pa)
Velocity @ 0.15 in.wg. Pressure Loss: 864 fpm (4.39 m/s)
Tested in accordance with AMCA 540 (impact resistant, Basic protection) and AMCA 550 (high velocity rain resistant)
Std. Design Load: 30 psf