Smooth bottom Genesis II floor technology is now available for East frame-type dump trailers. Genesis II frame dump trailers offer the advantage of a totally smooth bottom that improves aerodynamic performance, while simplifying maintenance and eliminating exposed cross-members where ice, mud and snow can build up. The Genesis II floor uses floor panel extrusions with internal stiffeners made of a new aluminum alloy that is stronger and more wear-resistant. This design also reduces the likelihood of loads freezing in the trailer, and allows a unitized wall-to-floor construction.