Those types of fans are used on electronic rack units. Check out
electronic surplus stores.




On Fri, 22 Jun 2012 11:18:48 -0400, "G. Ross"
wrote:

tiredofspam wrote:
Bill,

Here is what I was talking about.
You can even use a box fan, but that would be hard to redirect the
output out the window.

With this type of squirrel cage just make a box for the output side and
use a couple of 4" hoses.. you could use dryer vent hose instead of DC
hose too.

That's the same type of squirrel cage fan I have on my sanding
table/air cleaner.
They are hard to find around here.