Great square double tetraswirltegum

The great square double tetraswirltegum is a convex isochoric polychoron with 128 identical cells. It is the fourth in an infinite family of isochoric square tegmatic swirlchora, the others being the small square double tetraswirltegum and transitional square double tetraswirltegum.

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.