 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.
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| 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. |
