I had someone write recently and ask "how well do those filters strapped to box fans actually work?"
I thought it deserved some more research, and I've been trying different filters, etc., to figure out how well a box fan w/ filter can function as an air cleaner.
Because I didn't intend this to be permanent, I wanted a quick way to hold the filters to the fan.
I was able to weave a piece of clothesline through the grill in such a way that it retains the filter in three corners. The fourth corner can be tied in a bow, or you can use on of the cord stops I found on an old bag that was being discarded.
It actually works very nicely, and took all of two or three minutes.
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