In article ,
"Kevin" wrote:

Recently I finished cobbling together an air cleaner. Basically a wooden
fram built around a squirrel cage with an electric motor - straight out of a
house furnace. Now I haven't much room in my shop (11X15) so I have it
about 12" off the floor. I am thinking that attaching it to the ceiling
would be somewhat better placement. Any comments?

Higher and close to the source of dust is better than low and further
away from the source.

I have a new commercial unit - the instructions recommend an optimum
height is 8-10 feet. Also keep obstructions to a minimum on both the
inlet side as well as the outlet side.

--
"Sure we'll have fascism in America, but it'll come disguised
as 100% Americanism." -- Huey P. Long