Abstract: A light weight pallet assembly extruded from a recyclable, thermoplastic material is provided for storing, handling and transporting heavy or bulky articles. The pallet assembly includes at least two elongate, generally hollow runners, a plurality of support bars, and fastening members for coupling the support bars to the runners. Each runner includes an upper load supporting surface, a lower surface, a pair of opposed lateral surfaces and at least one, and preferably two, transverse ribs connecting the opposed lateral surfaces. A plurality of longitudinally spaced apertures are formed through at least one of the opposed lateral surfaces of the runner for receiving a respective one of the support bars therein. A plurality of longitudinally spaced apertures are formed through the upper surface of the runner and in at least a portion of at least some of the support bars for receiving the fastening members. The fastening members may be secured with an adhesive or may be press fit.