Abstract: A rack structure for use in a store for storage and display of samples of material such as of carpet, fabrics, and the like comprises opposite end members positioned in spaced, upright relationship for display of large samples, such as sample books thereon, and a plurality of supportive shelf members extending between and connected to the end members. The shelf members have midportions and front portions and a plurality of spaced divider wall members on each of the shelf members extend from the midportions to the front portions and divide each shelf member into a plurality of narrow, side-by-side trays. Front wall members respectively extend along the front portions to close the front of the trays. A plurality of sample pieces of material of relatively small size are received in the trays and removable therefrom for transport from the store whereby the pieces can be taken to a proposed installation site for examination.