EtherMega - looking for enclosure that fit grommets for connectors

Hello, because combination of the Arduino Uno and the Ethernet shield is insufficient for my little complicated programs, I purchased EtherMega. My satisfaction with EtherMega is great, but I do not have a suitable box, which would fit. Google can not find nothing relevat. Currently I use the Crib for Arduino Case because it has a detachable faceplate, but to mill the faceplate of the appropriate holes is beyond my possibilities.

Any tips? Thanks!