On 09-2195, FRAN WARWICK wrote to GEORGE DESTAFFAN:
 FW> I set the fan up two days ago, but not in the window for I need the
 FW> heat/cool to stay inside. In Texas you never know what it will be
 FW> hot or cold. The fan is 21 inches square and I attached a furnace
 FW> filter on the back..$2.00. It is set on the floor under Suggie, the
 FW> Grey and seems to be pulling some dust.
OK now you've got the idea.  The advantage of installing in a window is that 
you would tend to get "plug flow"; that is all the air would be flowing 
through the filter in a once thru manner.  You might achieve similar results 
by filtering from one room to the other in your home ...  tho if the filter 
is not as efficient as you would like, it may transport the finer dust from 
the bird room to the other ... sigh ... be sure to make provisions for the 
'fresh' air to enter the bird room opposite the fan side.
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 * Freddie 1.2.5 *
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