Raspberry Pi 4 Case (hidden GPIO, 40mm fan)

It is a simple and easy to print case for RPi 4B with a capability to install a 40x40x10mm fan, which is just snapped into the top part of the case.
GPIO slot can be covered with a simple insert, that partially hides the cable mess.

Only screws, that are needed for assembly are 4 pcs. M3x10.

STEP files are also available for download and modification.