Abstract: This invention provides a frameless, stress skin seat construction which can be attached without frame members either to others of its kind or to a supporting surface. The seat construction includes a seat pan of sheet metal formed to define beam-portions at opposite sides, a cylindrical portion at the front for load supporting capacity, and a concave upward dished portion in the rear to add torsion resistance. The construction also includes a back pan of sheet metal which is shaped to define rearwardly opening beam portions at opposite sides, a concave forward dished portion in the lower half to add torsion resistance, and a rearwardly opening U-shaped channel at the top for providing beam strength. The two pans are secured together in such a way that a force sufficient to fold the pans together will cause buckling primarily at the joint between them, rather than any buckling in the pans themselves.