Greenheck Smoke Dampers SMD-301V Installation Instructions Manual page 3

AMCA 5.2 Pressure Drop
* Sizes are in inches.
12 in. x 12 in. (305mm x 305mm)
Velocity Pressure Drop
(fpm) (in. wg)
500 0.03
1000 0.12
1500 0.26
2000 0.46
2500 0.72
3000 1.04
3500 1.41
4000 1.84
5D
24 in. x 24 in. (610mm x 610mm)
Velocity Pressure Drop
(fpm) (in. wg)
500 0.01
1000 0.06
1500 0.12
2000 0.22
2500 0.34
3000 0.49
3500 0.67
4000 0.87
SMD-301V
4 (W) (H)
D
3.14
36in. x 36 in. (914mm x 914mm)
Velocity Pressure Drop
(fpm) (in. wg)
500 0.01
1000 0.06
1500 0.12
2000 0.22
2500 0.34
3000 0.49
3500 0.67
4000 0.88