The addition of the Fusion model is fantastic! I wasn't able to source the filters recommended so I adjusted the filter housing to use the 85 x 90mm versions available on amazon ( https://www.amazon.co.uk/dp/B0C6QFCTXD?ref=ppx_yo2ov_dt_b_fed_asin_title).
I then decided to instead design an adaptor cartridge so that people who have printed the original files but can't find a source of the original filters can use the ones linked above. The actual surface area of the filter better matches the inlet size of the fan. I will add a link to the files and pictures once I've tested them.
Thanks for saving me an afternoon of design work to solve the problem you've already solved!























