Greenheck Fan OFSD-311 dimensions AMCA 5.5 Pressure Drop, in. wg

AMCA 5.5 Pressure Drop OFSD-311

*

12x12 48x12

12x48

24x24

36x36

* Sizes are in inches.

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

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

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

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

Velocity	Pressure Drop
(fpm)	(in. wg)
500	0.03
1000	0.12
1500	0.27
2000	0.49
2500	0.77
3000	1.11
3500	1.51
4000	1.97

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

Velocity	Pressure Drop
(fpm)	(in. wg)
500	0.03
1000	0.14
1500	0.32
2000	0.57
2500	0.89
3000	1.28
3500	1.75
4000	2.29

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.