These feet bracket are required if you want to mount a Raspberry Pi 3/4 with the Waveshare 5" IPS touchscreen to the case at the front of the bottom bar of the enclosure using the following model: Original Prusa Enlosure - Raspberry Pi Mount with 5" Display
To mount the double height feet bracket you can use the same foam pads, screws and nuts as for the official bracket.
Of course, you can also use these feet for other purposes. In terms of stability and use of the case, I could not notice any difference.
The model was created from scratch with FreeCAD.
The author remixed this model.