Abstract: The handling device disclosed is designed for use in a dynamic warehousing system. Items of merchandise are set down on bearer frames, embodied without wheels and constructed in such a way as to sit directly upon and traverse back and forth along the rollers of a storage line. The single frame has two parallel longitudinal members at bottom which ride over the rollers, and is provided with stops that are engaged by detent mechanisms incorporated both into the line and into the platforms of devices, stationed at either end of the line, by which the single frames are loaded and offloaded.