Adjustable

Adjustable

Adjustable louvers feature modulating blades that open or close to control airflow without the need for a separate control damper. Available in both drainable and non-drainable blade designs, these louvers come in a variety of frame depths, blade angles, and spacings. Constructed from extruded aluminum, they can be equipped with manual, electric, or pneumatic actuators to meet your operational and automation needs.

Model Description Blade Frame Free Area Water
Penetration
Rating (WPR)
Feet/minute
Pressure
Drop
@ WPR
inches W.C.
Air
Flow
SCFM
Material
Thickness
(Frame/Blade)
Inches
Single Panel Size
Orientation
H - Horiz.
V - Vert.
Angle
Deg.
Spacing
Inches
Depth
Inches
Sq. Ft. % Min
W x H
Inches
Max
W x H
Inches
LE-21A Adjustable Drainable H 45.0 5.00 4.00 7.51 47 923 0.17 6932 0.081 / 0.081 12 x 12 60 x 96
LE-31A Adjustable Drainable H 37.5 4.00 6.00 9.49 59 1073 0.22 10182 0.081 / 0.081 12 x 12 48 x 96
LE-33A Adjustable Drainable H 45.0 7.00 6.00 7.86 49 929 0.20 7307 0.081 / 0.081 12 x 12 60 x 96
LE-47A Adjustable Non-drainable H 45.0 5.00 4.00 7.61 48 740 0.19 5631 0.081 / 0.081 12 x 12 60 x 96
LE-48A Adjustable Non-drainable H 45.0 5.00 4.00 7.61 48 740 0.19 5631 0.081 / 0.081 12 x 12 60 x 96
LE-63A Adjustable Non-drainable H 45.0 7.00 6.00 7.80 49 968 0.22 7553 0.081 / 0.081 12 x 12 60 x 96
LE-88A Adjustable Non-drainable H 70.0 5.00 6.00 10.41 65 739 0.19 7693 0.081 / 0.081 12 x 12 60 x 96
Notes:
Performance based on 4' x 4' louver
Standard construction designed for 25 PSF (100 mph) wind load for maximum single panel size