Tim Alpen has built on the B-14 and B-15 series, which are tables just a top with wooden legs. There are no side rails in the way. Same tops with veneer, laminate or linoleum, but with metal legs. The B-24 has square legs, the B-25 has round legs and the B-26 has flat oval legs. For the round and square legs there is the option of having integrated wheels in a leg pair.