Some months ago, I purchased a box fan with attached filter. The purpose it to help reduce airborne dust when I do "cellulose machining" (wood working). It works well, and I like it very much. It is a bit noisy, though (like most box fans).
This is the item I purchased (no affiliation):
Lasko FF305 Air Flex 2-in-1 20-inch Box Fan and Air Purifier in One with MERV10 Air Purifying Filter for Cleaner Air and a Cooling Breeze
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
The biggest issue was finding a place to put it. On the floor works OK, but it should be closer to shoulder lever for better air clearing and circulation. Placing it on a workbench is better, but there it is always in the way. As I frequently do, I searched online for ideas. I found a very basic stand and elaborated on the design to better fit my needs.
I mounted a pair of 1/4-20 carriage bolts on the sides of the fan. I put a slot in the top of the supports and secured it with knobs. The slot allows easy removal of the fan in case I need to service it or want to temporarily put it somewhere the stand doesn't work. The knobs allow the fan to be tipped up or down as desired.
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The uprights are 48" tall. The legs are 20" long. I had to add on some small pieces to the legs in order to mount the casters. There are two 2x4 cross-braces cut to length to match the fan width.
I attached a piece of pegboard for diagonal stability, and for tool / supply storage. The pegboard extends a few inches above the upper cross-braces and put a piece of 1x4 across the back to make catch-all shelf for small items.
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I also added a small screw hook to one side to help with cord management. I often power this fan from a ceiling-mounted cord reel and use the hook to support the cord. It is also a place to store the fan's plug when not in use.
So far, I just have a bench brush hanging from the pegboard. Plenty of room for other items as I find the need. "You can never have too much storage."
Both sides of the pegboard can be used for storage, though the white side is "downrange" of the fan -- your hat may get blown off if you aren't careful.
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