Long time ago I made my own activated carbon filter from plans I found online out of chicken wire, some duct parts, of course activated carbon, and pantyhose. got some funny looks when buying that last one, but it worked like a freaking charm.
well…
A 2022 study found the clean air delivery rate on the five-filter design was between 600 and 850 cubic feet (17–24 m3) per minute (depending on fan speed), costing roughly a tenth of commercial air filters.
hope you can keep up!
I thought it was for filtering weed smoke, designed by the famous grower and strain creator Ed Rosenthal Ed Rosenthal.
could be his brother