1790NS ENCLOSURES - or equivalent-sized enclosures - commonly used for larger projects like the Meatsphere, 4-knob RAT, Tap-tempo delay, Electric Mistress, Neovibe, and Echo Base.
EDIT:
I looked into the 1590DD and the 1590BB but I couldn't make the standard knob layouts / PCB layout for the above projects work. Blake, if your buyer can find a source for the 1790NS, I think it would fill a much-needed niche.