I was looking for a Metal box to build a BIAB controller in and found this and thought I'd pass it along. 21" tool box. I removed the handle from the top and installed my switches and controller. For $25 I don't think there's anything better out there.
http://www.harborfreight.com/steel-toolbox-91111.html
http://www.harborfreight.com/steel-toolbox-91111.html