Small Filter holder for Flashfore replacement filters to be used on the Prusa Core One. The Holder attaches with 4x m3 screws (I used spare 8mm long ones from the Core One kit, but shorter will do also.)

https://www.123-3d.nl/Flashforge-Guider-2s-Carbon-Filter-Cotton-20-001062001-20001062001-i5851-t15151.html

The cover is held on by 3x10mm magnets. I used the orange sample PLA for it until it ran out and then finished with the black one. It gives a charm to it. 

Probably PETG or stronger would be better. 

I added the step files, freak out!