| Specification | Description | ||||
|---|---|---|---|---|---|
|
Leakage Resistance - Fully Closed |
Not Rated for positive shut off |
||||
|
Pressure Drop - Fully Open (in. W.G.) |
|||||
|
24 x 24 in. |
0.05, 1,000 fpm |
0.20, 2,000 fpm |
0.42, 3,000 fpm |
0.77, 4,000 fpm |
|
|
48 x 48 in. |
0.03, 1,000 fpm |
0.10, 2,000 fpm |
0.25, 3,000 fpm |
0.45, 4,000 fpm |
|
|
Operating Torque |
0.5 in. static pressure and 100 FPM fully open approach velocity: 3.10 lb·in/sq. ft 1 in. static pressure and 1000 FPM fully open approach velocity: 3.50 lb·in/sq. ft |
||||
|
Velocity and Pressure Limits: |
12 in. wide damper |
6,000 fpm at 6 in. static |
|||
|
24 in. wide damper |
4,500 fpm at 6 in. static |
||||
|
36 in. wide damper |
3,000 fpm at 4.5 in. static |
||||
|
48 in. wide damper |
1,500 fpm at 3 in. static |
||||
|
Mounting |
Vertical or Horizontal Airflow |
||||
|
Temperature Rating |
-40°F to 250°F (-40°C to 121°C) Standard -65°F to 350°F (-54°C to 177°C) Extended |
||||
|
Approximate Weight |
8 x 6 in. (Minimum) |
5 lb (2.27 kg) |
|||
|
30 x 30 in. (Maximum) |
108 lb (48.99 kg) |
||||
Note: The preceding data was compiled from test data, corrected to standard temperature and pressure conditions, determined using instrumentation and procedures in accordance with AMCA Standard for Test Methods for Louvers, Dampers, and Shutters No. 500.