Abstract: A prefabricated, readily adjustable easily assemblable product display fixture having components which can be installed and interchanged without the use of special tools and substantially without nut-and-bolt type fasteners. As a result of the abundant flexibility provided through the readily interchangeable components employing a substantially common type interlocking system, the fixture may be adapted for display of such diverse product items as greeting cards in a stair-stepped array on a special inclined deck structure. The fixture includes a base a pair of extensible upright standards interlockingly secured to the base at the rear of the latter and, in one form, a simplified card display deck suspended from the standards by sling brackets which support the deck in overhanging relationship to the base therebelow and which permit the deck to angle upwardly and rearwardly from the point of suspension in rearwardly leaning mode to bear against upper portions of the standards.