Couldnt find good sources so this one uses the same Filters as the popular BentoBox Air filter.
This one redirects the air wich will probably affect performance of the exhaust fan a bit but probably way lett than the filters already do.
Printed with supports (a bit tricky to remove but possible).
Requires four 6x3mm Magnets (fitment might require some glue)
The author remixed this model.