This is an enclosure for a 4.2" Waveshare ePaper display module. I've connected the module to an ESP32 and it displays a bunch of information above my desk.
I put a rough guide to putting one of these together up on my blog.
The top should be printed with something like PETG. PLA is too rigid, and the tabs will likely break. The bottom can be printed in pretty much any material (I printed mine with PLA).
The top should be re-oriented so that it prints with the face down.
Both the top and bottom should be printed with supports.