Scroll about midway up in this thread and it is possible to case the LimeSDR in a much smaller case than Luftek has, but Lufteck is obviously accommodating all the connectors such that nothing gets left out.
The link to the smaller case discussion is here ----> Continuing the discussion from Hammond 1455 V2 aluminum case for LimeSDR:
...And you can always enclose it in a little bigger case of the same make (has the same width and length dimensions, but has more height. When I get to the house tonight I'll send you the part number for that other case. As shown in the link I sent you, the LimeSDR fits like a glove.
73 de Marty, KN0CK