If you have built your own boxes then t should be easy enough, putting your stuff in a rackmount case is not much different than any other case you may have used.
I used these cases: http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
If you start looking for a server cabinet be sure to search on craigslist and your local pc recycle shops, just make sure the cabinet is deep enough for the cases you buy (most should be).
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