The "starter" filter for the chamber exhaust on the SV08 left much to be desired; here is my take. 400%+ filter space. Used the original fan, mounts to existing chamber exhaust with m4 screws and use a few m4 nuts to attach the fan to the enclosure. I left a few small square recesses on the inner part to accept some 3M VHB tape, just to minimize possible vibrations.
After printing, Just fill the void between the two halves of the chamber with https://www.amazon.com/s?k=carbon+prefilter sheets. (non-specific, I used BestAir carbon pre-filter from Menards, just cut it down to size.
Modeled in Tinkercad.
The author remixed this model.
Modifications to accommodate 9025 fan on the outer shell, and inner shell has just an opening to use existing SV08 exhaust grill and mounts.