Reply by Mike_in_STL

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Posted on Air Filtration

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1127 posts in 1139 days

#1 posted 11-08-2019 12:08 AM

$20 box fan and a 20×20 (or whatever size the fan is) furnace filter. Tape the filter to the front or back of the fan, and run it at whatever speed you feel is correct. Not as romantic, but just as effective. And LOTS less expensive.

If you wanted to make a project out of it, you could build a box around the fan and make a slot for the filter to live in.

-- Sawdust makes me whole --Mike in STL

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