DFO-103 - page 28

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Themost efficient fan for anyse-
lection is Chicago’s Design 51.
When working with lower pres-
sure, typically below 5" SP, and
spaceand initial cost areprimary
considerations, theDesign51RA
in smaller sizes may be a better
selection.TheRAfanwasspecif-
ically designed for improved
efficiency in low pressure, high
volume applications. The exam-
ples to the right demonstrate that
both fans will be able to provide
awide rangeof selections.
DESIGN51RA
ForLow
Pressure
Applications
1...,18,19,20,21,22,23,24,25,26,27 29,30,31,32,33,34,35,36,37,38,...52
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