This is a Raspberry Pi 4B case that has a few configurations for different scenarios. The two parts of the case snap together and can be release by pushing in the front sides and lifting up. This case was designed in OnShape.
Requirements
There are 2 different bottom halves, one for mounting a bolt going downwards from pi to base and one for mounting the other way round. This is helpful if like me you have a heat sink / HAT that requires the bolts to come from below There are 4 different bottom halves, one which supports a standard 40mm fan and another that is fan-less, the other 2 are the same but also have slots for the DSI cables.
Credit to @print_byte for the ‘Raspberry Pi 4 B’ model used in renders and also used as reference when designing the case. Link: https://www.printables.com/model/727545-raspberry-pi-4-b
The author marked this model as their own original creation.