Abstract: An upright assembly for a shelving system includes a tubular upper upright section having a bottom end portion, a rail assembly and a base assembly having a top end portion and a tubular lower upright section. The base assembly is adapted to stand on a surface and the top end portion of the lower upright section of the base assembly is connected to the bottom end portion of the upper upright section. An insert blade assembly connector including a blade and an alignment plate is positioned within the tubular upper and lower upright sections. The rail assembly is connected to the upper upright section and the lower upright section of the base assembly to strengthen the connection between the upper upright section and the base assembly.