The system of the present application includes a display tray assembly having base and center tray sections that are configured to form a gap that receives a side tray section on either side. The side tray sections are configured such that they may move laterally with respect to the base and center tray section in order to adjust the width of the entire display tray assembly to accommodate any size product in a retail environment. In lieu of side tray sections, the display tray assembly may include union tray sections that may engage two separate base and center tray section assemblies in order to create a continuous display tray assembly with adjustable widths.