Abstract: A modular system of interconnecting track members for use on a flat shelf or on an inclined gravity-feed shelf, wherein each individual track member includes an overhang on a first sidewall extending in a direction opposite the second sidewall of that track member, the overhang defining a channel to receive a portion of a second sidewall of an adjacent track member. The track members are provided in a variety of configurations, including different widths and different wall heights. The track members may also be provided with such features as friction-reducing hip slide rails, a groove to facilitate removal of the overhang, drainage openings, permanent dividers, and removable dividers.