4x4x6 Fisher CuboidThe mass produced 4x4x6 fishered (twisted 45° inside its solid) and again mass produced.
4x4x7Another cuboid of dimensions which had been unthinkable years ago.
4x4x8A cuboid with more than 200 pieces.
4x4x9A half regular cuboid from Grégoire Pfennigs run of cuboids of 2012.
4x5x5The "biggest" cuboid in the range of N<=5.
4x5x6The (fully functional) logical next step after 1x2x3, 2x3x4 and 3x4x5
4x6x6A fully functional cuboid with half-regular dimensions.
4x6x8Also known as "Another Ultimate Shape Shifter". Another entry in the ever growing field of fully functional cuboids.
4x8x8A pillowed 4x8x8. Made by hand from a 8x8x8.