>>2872486
Box fans like that aren't built for static pressure to push a good volume of air through those filters. They're made for low pressure air volume and silence. That said, they're better than nothing and will reduce dust by sheer volume being on at all times, but if you're using it for actual dust and smoke control you're a doofus.

>$100 tower air purifier
Most air cleaners for medium household rooms are like $150 now and have to go through $100 of air filters per year. If you're in a dusty shop, you're clearly trying to take the cheapest possible route and its just wasting money.

If your'e serious about regular dust in a workshop area, get a legit filter system. It'll cost a couple thousand, but you'll notice a lack of dust after a month. Or you can rig up something like >>2872551 if you use a loud fan and are diligent about replacing filters. Something to note; HVAC filters like that should be replaced (depending on total run time) every 2 months or so, even if you have 3 of them running a high flow fan (as you should be) in a dusty workshop you'll be replacing them once a month. Each filter is at a minimum $20.

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