That Norco might work, but looking at it, I'm curious what the usable dimensions are inside. The exterior depth shows 31.5" and the Dell Standard depth is 28 7/8. That's cutting it pretty
close. I haven't found a spec sheet or anyone talking about the interior dims yet.
This is a little damaged apparently, but might be the right idea.
http://www.pcliquidations.com/p22356-dell-poweredge-2420-24u?utm_source=google&utm_medium=cse&utm_term=22356&r160164167166161&gclid=CKmf_t_X08gCFZKLaQodxuIP1w#