I'm in Northern Virginia, and I use a local fabricator called K-Form (kform) to do all sorts of things. I know they do custom equipment/server racks, although they focus on Tempest and Environmentally controlled racks. I'm sure they can do what you want, but I don't know your quantity, so I don't know if it would be cost effective. 1? Probably not. 10? Maybe. Since I've never bought full up racks from them, it's possible that they already have a design that would work for you. If you're interested, PM me on here, and I'll send you the relevant contact info.