On Thu, Mar 19, 2020 at 01:02 PM, Clint Chron wrote:

I suspect that there would not be enough demand for the special filters to warrant Elad’s financial investment in the project.

I'm sure you're right, Clint, but the individual filter boards are relatively cheap and I don't suppose Elad is making a loss on these?

But your eBay link is interesting, and that could be a cost-effective, general-purpose alternative. Thanks!