Abstract: A merchandise display matrix includes at least one pair of upright members and a merchandise tray support member wherein the support member is adjustable in length. In other embodiments, a merchandise display matrix includes at least one pair of upright members and a plurality of merchandise display trays, including a first end tray and a second end tray, wherein the display trays are provided with apparatus for fixing the trays together and the first and the second end trays are provided with apparatus for engaging with the uprights.