@schamspeare i am making a custom case and documenting it (YouTube is my current place to upload), but this specific case is a “Power Lunch” Eurorack case. They can be pricey especially if they are sold used with gear in them, this one came with a power bus and some other utility bits.
But here’s a protip regarding cases: smoke shops that are boutta go out of business, they sometimes sell these pelican knockoffs for cheap. They are sealed up enough that stoners apparently trust them to be smell-proof; and I assume they’re at least robust enough for travel.
I use those for weird-size gear and use the foam to seat the oddware, please see attached: