Cuboid
From Speedsolving.com Wiki
A coboid is a rectangular puzzle that is not a power of 3 (n*n*n), usally two of the axis are dived the same and the third one is diffrent but more uncommon types can have all thrre diffrent, like 2x3x4.
The most common puzzle in this group is Rubik's Domino that is dived in 3x3x2 pieces.
