Abstract: A cargo supporting floor particularly suited for refrigerated trucks or other carriers is formed of a plurality of interlinked panels, each panel being integrally formed with at least one longitudinally extending T-shaped member and at least one parallel, longitudinally extending inverted U-shaped channel. The panels are extruded from a suitable material such as aluminum and are formed with interlocking edges so that the individual panels may be firmly joined to one another. Various combinations of T-shaped members and U-shaped channels are available, to combine the air circulation effectiveness of the T-shaped member with the load carrying capacity of the channel member as needed for particular conditions of use.