Abstract: A load-supporting rack for a truck bed including a plurality of similar base members adapted for mounting adjacent the fore and aft corners of a truck bed and each having a vertically elongated opening extending to the upper end thereof; a plurality of similar elongated vertical members interchangeably mounted in the base members; and a plurality of similar horizontal members interchangeably mounted on the vertical members; the parts when disassembled providing compact stowage in a bundle of essentially elongated elements.