This is a power supply case that attaches to V-slot or T-slot linear rails. I use this with my D-Bot but it can be used with any printer that uses these extrusions. You can use an optional brace for vertical support but I haven't needed one since its quite stiff and sturdy. It houses an IEC C14 AC socket with a fuse and switch. This case is designed to house a socket that needs to be screwed in and not press-fit.
Printing at 100% infill is recommended since it makes the part really stiff and sturdy. Supports are placed in between the slots and openings.