We have some used Liebert Foundation Air Conditioned Server Racks available.
In great condition this 42u cabinet has 35u of square-holed vertical mounting rails for 19 inch or 23 inch Rackmount computer equipment.

You can see it here: http://www.computerstructures.com/Ai...rver-Rack.html and see a video with an inside look here: http://www.computerstructures.com/Ai...eo-Detail.html.