An holder for active carbon filter fabric for the side air inlet of the Atomstack P1.
This helps to prevent smoke entering your room and also scatters/blocks any laser reflections coming through the venting holes.
Just cut some active carbon filter fabric onto size and put it into the holder. You can push the pins on the holder into the holes on the air inlet and it should remain there with some force. Depending on your printer the pins might need some small tweaking.
The author marked this model as their own original creation.