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Rev. Date 040218
Model 550
The Model 550 has a standard airfoil to mount clearance of 3 feet [0.916 m] with the Rapid Mount
Industrial or Universal Mount. A clearance of 2 feet [0.6 m] is the minimum allowed clearance
for this fan model. Refer to the Fan Clearance & Placement charts on pages 6-9 for required fan
clearance and mounting conditions.
Model 780
The Model 780 has a standard airfoil to mount clearance of 3 feet - 2 inches [0.956 m] with the
Rapid Mount industrial or Universal Mount. A clearance less than this is not allowed. Refer to the
Fan Clearance & Placement charts on pages 6-9 for required fan clearance and mounting
conditions.
Fan Dimensions
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