Sounds like the board also somehow works inside a mini-itx chassis or something?
Given it's a Framework 13 mainboard, you can probably put it in any Framework 13-compatible enclosure:
https://frame.work/products/cooler-master-mainboard-case https://frame.work/products/framework-laptop-13-mainboard-ho... https://github.com/FrameworkComputer/Framework-Laptop-13
etc., lots of designs available.
It's not standard mini-itx. Since the physical form factors for their laptop boards are published publicly and are somewhat stable, are "desktop" cases for them.
Given it's a Framework 13 mainboard, you can probably put it in any Framework 13-compatible enclosure:
https://frame.work/products/cooler-master-mainboard-case https://frame.work/products/framework-laptop-13-mainboard-ho... https://github.com/FrameworkComputer/Framework-Laptop-13
etc., lots of designs available.