Abstract: The present invention provides an apparatus for redirecting air flow, and more particularly, an apparatus for efficiently generating a vertically directed air flow having a generally uniform velocity profile from a horizontally oriented fan. In particular, the present invention provides an apparatus for redirecting a three-dimensional inwardly directed flow to a planar radially inward directed flow, as well as an apparatus for redirecting a generally horizontal planar radially inward directed flow to a vertically outward directed flow, perpendicular to the radial inward directed flow, having a relatively uniform velocity profile across the cross section of the flow.