I did some searching for suppliers of pleated filters. Of course the current gold standard is the Wynn, reasonably priced at $200. I saw references to using large diesel truck air filters, so I did some searching down that path, but got nowhere. I found a company, Killer Filter who makes filters, so I called them to see what they could do. I showed them Wynn's page. they said... let me get back to you. what they came back with is their brand new (since my inquiry) model 114-7449.
it is less stuff than the Wynn in that it is the filter only- no hold down hardware or lid, but that stuff is easily enough fabricated by woodworkers who are willing to tinker with their dust collectors. for me, the price difference is worthwhile. I ordered it. when it comes in I'll report back.
I don't work for Killer Filter, Yadda yadda. just found what looks like a good deal.
Unit Price: $ 131.25 discounted from $161.25. they said they would give this price for users here if you ask for it.
Spec’s 17.59” OD x 12.233” ID x 23.00” HGT 222 Sq. Ft ICF-15 Nano-Fiber Media, Inner & Outer Core, 5/8” x ˝” Gasket installed on Outside Diameter, Open/Open
Freight Terms: FOB Louisville; pre pay & add
Lead Time: 7-10 days ARO
It’s a MERV 15 rating. It performs at 80-95% on the 1 micron or less size. The E1 test result for initial efficency % on .30-1 micron size 88%.
reach them at:
1213 W. Flint Meadow Dr.
Kaysville, UT 84037
Phone: 888.950.7248 Fax: firstname.lastname@example.org
hope this helps someone.