Looking for mini-itx rackmount cases...

[H. Kurth Bemis]

Has anyone seen mini-itx or other SBC cases that would hold two or maybe 
three systems in 1u or  2u?  Even a blade-like configuration would OK, 
though higher density then I really need at this point.

Also thinking about power consumption with this project.  Should I be 
looking at DC only gear and setup?

I haven't found anything like what I'm imagining on google, though I 
suspect one might exist somewhere.

I'm building out a small high-security network and wish to use multiple, 
yet separate firewalls for structure.  Three or four at this point, but 
could scale up to 5 or 6.  I'd rather not shell out $$ for elcheapo 
boxen that I have to replace every year, plus I have a closet the size 
of well....a small closet.

Thanks.
~hkb