I made an exhaust fan hepa filter holder for the bambulab printer that uses the same filter typer as the bento box air filter.
I bought the filter in a 10x pack and wanted to use the same filter also for the rear exhaust.
The holder is kept in place from 6 magnet 5x2mm.
I made also a file for TPU gasket, if you want to use the gasket i suggest to use the “gasket” model that have a bit less magnet dept to compensate gasket thickness.
For the holder I printed in PLA 0.20 layer, ironing 20% top surface for better adherence, no support needed.
For gasket printed in TPU 0.20mm layer 100% infill.