Greenheck Smoke Dampers SMD-301V Installation Instructions Manual page 5

AMCA 5.5 Pressure Drop
12 in. x 12 in. (305mm x 305mm)
Velocity Pressure Drop
(fpm) (in. wg)
500 0.04
1000 0.18
1500 0.42
2000 0.75
2500 1.17
3000 1.68
3500 2.29
4000 2.09
4 (W) (H)
D
3.14
24 in. x 24 in. (610mm x 610mm)
Velocity Pressure Drop
(fpm) (in. wg)
500 0.03
1000 0.13
1500 0.29
2000 0.52
2500 0.81
3000 1.17
3500 1.60
4000 2.14
SMD-301V
36in. x 36 in. (914mm x 914mm)
Velocity Pressure Drop
(fpm) (in. wg)
500 0.03
1000 0.12
1500 0.27
2000 0.48
2500 0.75
3000 1.08
3500 1.48
4000 1.93