Greenheck Steel Airfoil Blades FSD-311V Specification Sheet page 3
Combination fire smoke dampers steel airfoil blades ul 555s leakage class i ul555 1 1/2 hour fire resistance rating
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Also See for Steel Airfoil Blades FSD-311V:
- Installation, operation and maintenance instructions (8 pages) ,
- Manual (12 pages)
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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
Fsd-311V
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
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