In message , Irv Finkleman VE6BP
writes
Thanks Ian,

There were existing fans and holes in the rear panel, and I was
just curious before replacing the fans. Both had become noisy and
I removed them without checking air flow direction.

Ah....
I was thinking more of a 19" rack horizontal fan tray (holding maybe a
couple of 6" diameter fans - which can sound like a hovercraft on full
power!).


--
Ian