Square duoantiprism

The 4-4 duoantiprism is a convex isogonal polychoron that consists of 16 hexagonal antiprisms and 32 tetragonal disphenoids obtained through the process of alternating the 8-8 duoprism. However, it cannot be made uniform.

The 4-4 duoantiprism can be vertex-inscribed into a tetradisphenoidal diacosioctacontoctachoron.