OT: Where to buy an appliance style case?

[Steve B]

Has anyone seen a manufacturer that sells an appliance style chassis? I'd
like to slim down my current 4U/OBSD box to a 1U form factor using a VIA C7
board. Ideally I'd like to have a chassis that has the Ethernet ports on the
front, along with a serial port. Something like an old Symantec Firewall,
Netscreen or Watchguard chassis. Alternatively has anyone hacked one of
these type of devices and installed their own board and drive?