Triangular-heptagonal duoprismatic prism

The triangular-heptagonal duoprismatic prism or trahep, also known as the triangular-heptagonal prismatic duoprism, is a convex uniform duoprism that consists of 2 triangular-heptagonal duoprisms, 3 square-heptagonal duoprisms and 7 triangular-square duoprisms.