PC Expansion Slot Cover
There are plenty of other versions on this site, I just like making my own stuff for practice.
Comes with a very flat, flat and a bumpy version.
All are non-vented.
Will need support material for the tab that goes down the bottom.
Doge donations: D5cqNG1nHCRWeyFHv5LaJNrMP54MVyM2Az
Much appreciated!