Greenheck Fan OFSD-311 dimensions AMCA 5.3 Pressure Drop, in. wg

AMCA 5.3 Pressure Drop OFSD-311

5D

6D

*

24x24

12x12	36x36
48x12
	12x48

* Sizes are in inches.

12 in. x 12 in. (305mm x 305mm)

	Pressure Drop
Velocity (fpm)	(in. wg)
500	0.01
1000	0.06
1500	0.13
2000	0.23
2500	0.37
3000	0.53
3500	0.73
4000	0.95

24 in. x 24 in. (610mm x 610mm)

	Pressure Drop
Velocity (fpm)	(in. wg)
500	0.01
1000	0.02
1500	0.06
2000	0.10
2500	0.16
3000	0.23
3500	0.32
4000	0.42

36in. x 36 in. (914mm x 914mm)

	Pressure Drop
Velocity (fpm)	(in. wg)
500	0.01
1000	0.02
1500	0.05
2000	0.09
2500	0.14
3000	0.21
3500	0.29
4000	0.38

12in. X 48 in. (305mm x 1219mm)

	Pressure Drop
Velocity (fpm)	(in. wg)
500	0.01
1000	0.02
1500	0.06
2000	0.10
2500	0.16
3000	0.24
3500	0.33
4000	0.43

48 in. x 12 in. (1219mm x 305mm)

	Pressure Drop
Velocity (fpm)	(in. wg)
500	0.01
1000	0.04
1500	0.10
2000	0.18
2500	0.29
3000	0.42
3500	0.57
4000	0.74

Greenheck Fan Corporation certifies that the model OFSD-311 shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with

the requirements of the AMCA Certified Ratings Programs. The AMCA Certified Ratings Seal applies to air performance ratings only.