Cabinets for rackmount cases

[Hao He]

I am going to set up a cluster with rackmount cases.
I found some web stores where we can get the cases and sliding rails,
but I could not find the cabinets to contain the cases.
Can anyone recommend some place where we can buy the cabinets for rackmount systems?
Thanks in advance.

BTW, I am in Detroit, Michigan.

Hao He
Dept. of Engineering Mechanics
Wayne State University