Apeirogonal duoprism

The apeirogonal duoprism is a prismatic uniform honeycomb of 3D Euclidean space. It consists of ∞ apeirogonal prisms. Each vertex joins 4 apeirogonal prisms. It is a duoprism based on the apeirogon.

It is degenerate, as its vertex figure has all faces coplanar. All of the polytope's vertices, edges, and square faces make up a square tiling, which is the comb product of two apeirogons.