{TAIL ~ Exemplary embodiment} may provide {HEAD ~ a fan efficiency benefit} of at least 1.0% relative to the combined spacing and cropping necessary to meet noise requirements for a ‘fixed’ CROF system 
{ TAIL ~ Exemplary embodiment } may provide { HEAD ~ a fan efficiency benefit } of at least 1.0 % relative to the combined spacing and cropping necessary to meet noise requirements for a ‘ fixed ’ CROF system
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