Enneagonal duoexpandoprism

The enneagonal duoexpandoprism is a convex isogonal polychoron and the seventh member of the duoexpandoprisms that consists of 36 enneagonal prisms of two kinds, 81 cuboids, 162 wedges and 81 tetragonal disphenoids obtained as the convex hull of two orthogonal 9-18 duoprisms. However, it cannot be made uniform.