This paper describes the feasibility and engineering test made on the construction system patented with the name "Panel for Building". This panel is made of vertical and horizontal profiles in thin pre-formed sheet and two stiffening plasterboard slabs located on opposite sides of the structure. Panel for Building represents an innovation in platform frame structures, because it uses cheap and easily found components. Forth more the use of plasterboard slabs reduces the layers of the wall and improves overall performance. This system allows to construct high performance buildings by optimizing construction time.