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Louvers | Extruded Adjustable

Our extruded adjustable louvers and combination louver-damper products are capable of an enhanced level of air flow control through their flexibility and adjustable design. This product line is perfect for systems requiring only periodic operation or systems that require the ability to completely control airflow.

We make a variety of adjustable louvers based on our standard louver offering, with a number of blade styles and depths.  In addition, we also make a line of combination louver/dampers that bring together a fixed louver with either a control or backdraft damper in a single frame, eliminating the need for the greater clearance requirements of a common sleeve arrangement.


Adjustable louvers can be controlled with a variety of operators: manually, crank, chain, electrical or pnuematic, all capable of completely shutting air out when necessary and also allowing maximum flow with minimum outside element and water penetration. Utilizing auxiliary switches on the operators allows for interlinking of the operation of our adjustable and combination louvers with the building's fan system and a greater degree of control: when the system is off, the adjustable louver (or control damper in the combination models) is able to remain in the closed position for a tight seal; when the system turns on, the louver or damper is able to be opened in sync for maximum on-demand ventilation. For our combination louver-dampers with backdraft dampers, the system flow and pressure dictates the operation of the backdraft damper in a similar synced manner without the need for active control.

Please click on the orange triangles below for further information regarding each model including product submittals.

 

Model Blade Style Depth Blade
Angle
Blade
Spacing
Free Area
48 x 48
Area Velocity
FPM
A-DBE-04
Adjustable Drainable-Blade Louver
Blade Style: Adjustable Drainable
Depth: 4"
Blade Angle: 40
Blade Spacing: N/A
Free Area 48 x 48: 57%
Area Velocity FPM: 1016
Details

High performance adjustable variation of our patented drainable blade configuration in 4'' thickness. The adjustable feature is useful on systems requiring periodic operation: in the open position the louver functions conventionally,...
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A-DBE-06
Blade Style: Adjustable Drainable
Depth: 6"
Blade Angle: 36
Blade Spacing: N/A
Free Area 48 x 48: 59%
Area Velocity FPM: 970
Details

High performance adjustable variation of our patented drainable blade configuration in 6'' thickness. The adjustable feature is useful on systems requiring periodic operation: in the open position the louver functions conventionally,...
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A-DWE-04
Blade Style: Adjustable Drainable
Depth: 4"
Blade Angle: 45
Blade Spacing: N/A
Free Area 48 x 48: 50%
Area Velocity FPM: 910
Details

High performance adjustable variation of our patented drainable blade configuration in 4'' thickness. The adjustable feature is useful on systems requiring periodic operation: in the open position the louver functions conventionally,...
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A-DWE-06
Blade Style: Adjustable Drainable
Depth: 6"
Blade Angle: 45
Blade Spacing: N/A
Free Area 48 x 48: 53%
Area Velocity FPM: 939
Details

High performance adjustable variation of our patented drainable blade configuration in 6'' thickness. The adjustable feature is useful on systems requiring periodic operation: in the open position the louver functions conventionally,...
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A-LEB-04
Blade Style: Adjustable
Depth: 4"
Blade Angle: 45
Blade Spacing: N/A
Free Area 48 x 48: 46%
Area Velocity FPM: 930
Details

Model A-LEB-04 is the 4" deep adjustable variant of our classic J style step-bladed louver.  The blade design features a rear water baffle and provides good protection against general weather conditions, with low pressure drop...
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A-LEB-06
Blade Style: Adjustable
Depth: 6"
Blade Angle: 45
Blade Spacing: N/A
Free Area 48 x 48: 46%
Area Velocity FPM: 852
Details

Model A-LEB-06 is the 6" deep adjustable variant of our classic J style step-bladed louver.  The blade design features a rear water baffle and provides good protection against general weather conditions, with low pressure drop...
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A-LEC-04
Blade Style: Adjustable
Depth: 4"
Blade Angle: 45
Blade Spacing: N/A
Free Area 48 x 48: 47%
Area Velocity FPM: 879
Details

The adjustable variant of our classic straight bladed louver, Model A-LEC-04 is a louver that combines form and function, adding both aesthetic appeal and reliable performance to any building.   The adjustable feature is useful on...
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A-LEC-06
Blade Style: Adjustable
Depth: 6"
Blade Angle: 45
Blade Spacing: N/A
Free Area 48 x 48: 46%
Area Velocity FPM: 906
Details

The adjustable variant of our classic straight bladed louver, Model A-LEC-06 is a louver that combines form and function, adding both aesthetic appeal and reliable performance to any building.   The adjustable feature is useful on...
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A-LEG-04
Blade Style: Adjustable
Depth: 4"
Blade Angle: 20
Blade Spacing: N/A
Free Area 48 x 48: 52%
Area Velocity FPM: 970
Details

The adjustable design variant of our step blade configuration louver, the A-LEG-04 utilizes a shallow 20-degree blade angle with a rear step designed to maximize free area and minimize pressure drop when in the open position while...
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AEN-04
Louver with Integral Backdraft Damper
Blade Style: Combination Integral--Intake
Depth: 4"
Blade Angle: 45
Blade Spacing: 4-3/4"
Free Area 48 x 48: 40%
Area Velocity FPM: 720
Details
AEO-04
Louver with Integral Backdraft Damper
Blade Style: Combination Integral--Exhaust
Depth: 4"
Blade Angle: 45
Blade Spacing: 4"
Free Area 48 x 48: 38%
Area Velocity FPM: 730
Details
C-DWE-44
Blade Style: Fixed/Adjustable
Depth: 4"
Blade Angle: 45
Blade Spacing: 4"
Free Area 48 x 48: 54%
Area Velocity FPM: 980
Details
C-DWE-46
Combination Drainable Louver and Control Damper
Blade Style: Fixed/Adjustable
Depth: 6"
Blade Angle: 45
Blade Spacing: 5-1/2"
Free Area 48 x 48: 49%
Area Velocity FPM: 929
Details

A versatile combination louver-damper ideal for high-volume systems such as warehouses and factories, the C-DWE-46 allows for excellent water penetration resistance via its drainable louver blades as well as complete control of...
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C-DDE-46
Blade Style: Fixed/Adjustable
Depth: 6"
Blade Angle: 39
Blade Spacing: 5-1/2"
Free Area 48 x 48: 49%
Area Velocity FPM: 929
Details
C-DWE-AF (46)
Blade Style: Fixed/Adjustable Airfoil
Depth: 6"
Blade Angle: 45°
Blade Spacing: 4-1/8"
Free Area 48 x 48: 49%
Area Velocity FPM: 937
Details

Outstanding for use in warehouses and other large spaces that require a high degree of weather-protected ventilation, C-DWE-AF (46) is an extruded aluminum combination louver and control damper that incorporates front stationary...
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C-LEC-46
Blade Style: Fixed/Adjustable
Depth: 6"
Blade Angle: 45
Blade Spacing: 5-1/2"
Free Area 48 x 48: 44%
Area Velocity FPM: 886
Details
CDHL-26e
Combination Louver with Exhaust Backdraft Damper
Blade Style: Fixed Drainable/ Backdraft Damper
Depth: 6"
Blade Angle: 45°
Blade Spacing: 2.38"
Details

The CDHL-26e is a combination drainable blade louver and backdraft damper in a single frame designed for exhaust applications.  The stationary drainable blade louver works in concert with the gravity damper to ensure...
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CDHL-26i
Combination Louver with Intake Backdraft Damper
Blade Style: Fixed Drainable/ Backdraft Damper
Depth: 6"
Blade Angle: 45°
Blade Spacing: 2.38"
Details

The CDHL-26i is a combination drainable blade louver and backdraft damper in a single frame designed for intake applications.  The stationary drainable blade louver works in concert with the gravity damper to ensure maximum resistance...
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General Louver Operation & Maintenance Details