Abstract: A method of manufacturing a seat back structure using a single piece of material. The method includes bending the single piece of material via a plurality of stamping processes to form the seat back structure. The seat back structure includes a web extending about a central opening, an inner flange extending about an inner perimeter of the web adjacent to the central opening, and an outer flange extending about an outer perimeter of the web. The inner flange is formed by bending via a first stamping process, and the outer flange is formed by bending via a second stamping process.