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  Airline Products Co.   Louvers, Dampers, & Penthouses  

Formed Stationary Drainable Louvers

   

Louvers, Dampers, & Penthouses

Formed Stationary Drainable Louvers

Applications

Airline also builds fabricated louvers in drainable blade style.

For applications where high free area and excellent resistance to water penetration are the primary concerns one of these models should be specified.

 

 

MODEL

WD-4

WD-6

WD4-45

WD6-45
Blade Type

Drainable

Drainable

Drainable

Drainable
Frame Depth

4"

6"

4"

6"
Material Thickness

16 GA

16 GA

16 GA

16 GA
Blade Angle

35°

35°

45°

45°
Blade Spacing

2.5"

3.5"

4.25"

6.25"
Free Area (48" x 48") Sq. Ft. (%) 

7.43 (46%)

8.21 (51%)

7.94 (50%)

8.00 (50%)
Velocity @ Beginning Point of Water Penetration (ft./min.)*†

1290

996

974

852
Pressure Drop @ Max. Intake Velocity (in. wg.)

.13

.13

.11

.10
Max. Intake Volume Flow Rate, 4' x 4' Unit (cfm)

9578

8175

7332

6812
Exhaust Velocity @ 0.15" wg. Pressure Drop (ft./min.)

1206

1183

1091

1048
Exhaust Volume Flow Rate @ 0.15" wg., 4' x 4' Unit (cfm)

8955

9705

8656

8382

*AMCA defines the beginning point of water penetration to be .01 oz./ft.2 free area.
†When designing intake louvers, this should be the maximum velocity.


Fairfax County Government Office Building
Fairfax, Virginia
Airline Representative: Vital Services, Inc. 

Suggested Specification

Furnish and install, where indicated on the drawings, Model WD-6 Drainable Blade Louver, as manufactured by Airline Products Company, Hagerstown, Maryland. Louvers shall be 6" deep, fabricated from 16 gauge galvanized steel and assembled completely be welding. Blades shall be spaced at 3-1/2" on an angle of 35°.

Louvers shall meet the following criteria for testing and performance:

A 48" x 48" louver shall have a minimum free area of 8.21 ft2 (51%).

The free area velocity at the beginning point of water penetration shall be 996 fpm.

The pressure drop at this velocity shall not exceed .13" water gauge.

At an exhaust free area velocity of 1183 fpm, pressure drop shall not exceed .15" water gauge.



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