A simple case, for a simple breakout board
This ESP32 breakout board on Aliexpress :
https://es.aliexpress.com/item/1005004476867346.html
(Color: Adapter 38P)
Onshape CAD link:
https://cad.onshape.com/documents/d037da173263e53f545515a4/w/5a2e548149bc4754534e5d28/e/a62295358c60ea72c45fe411?renderMode=0&uiState=66ef60864927d10f4ad364a4
Quite similar to this othe 4 relay case:
https://www.printables.com/model/771992-4-channel-relay-case-realis-gehause
The author marked this model as their own original creation.