Abstract: Roller assemblies for hanging panels are disclosed herein. Roller assemblies according to the present disclosure are configured to support a hanging panel and include an elongate rail configured to be mounted on a surface. The roller assembly includes a trolley assembly, which includes a bearing assembly configured to translate the trolley assembly along the elongate rail and a bracket coupled to the bearing assembly and configured to be coupled to the hanging panel. The elongate rail includes a rail adjustment system configured to facilitate adjusting a position and/or an orientation of the elongate rail with respect to the surface. The rail adjustment system is concealed in a rail-assembled configuration, and includes at least two spaced-apart rail adjustment mechanisms.