Great triangular double tetraswirltegum

The triangular double tetraswirltegum is a convex isochoric polychoron with 72 identical cells. It is the fourth in an infinite family of isochoric triangular tegmatic swirlchora.

Each cell of this polychoron has bilateral symmetry, with 1 rectangular-symmetric octagon, 4 mirror-symmetric hexagons, 6 kites, and 2 isosceles triangles for faces.