Yes -- server cases, as Philly Cheese says.
This makes me wistful -- tearful -- about my 2007 project.
I always throw in a picture of that project on this forum when this topic comes up. And now I think I should feed WGusler some pictures of my duct-boxes for the same project.
The sad thing that underscores this: I gave the "Chrome Window" project to my brother in 2011. It just seemed too big for my room, and I should have instead prepared it for a custom-water project.
And my brother and I are now "estranged" for totally unrelated reasons.
Anyway, I was poking around and discovered some pictures I'd made of the project that I'd never posted or shared before.
the project used a 1995 Compaq ProLiant Server case. I had to tap new threaded holes in the motherboard pan to make it ATX-compatible. Anyway, I now wonder why I even gave it to my brother -- regardless of our . . . current disagreement . . .