Small triangular double triswirltegum

The triangular double triswirltegum is a convex isochoric polychoron with 54 identical cells. It is the third 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, 2 mirror-symmetric pentagons, 2 kites, and 4 scalene triangles for faces.