Gotta know something about it to make a judgement. This'll help though:
1. Outside dimensions. Also need to know if any or all faces of the box are double layered.
2. Need to know the port dimensions, and also if any of the faces of the port share a common wall with the box (ie, is one of the port's four sides made by the outside box panel)
That'll at least let us look at what your gross/net airspace is and figure out the port area and tuning. Without those four bits of info no intelligent conversation can be had about whether or not that box will do shit for an SA12.