Abstract: Window covering assemblies having a housing supporting a first panel and having a second, movable panel are disclosed. The movable panel can have a frame positioned within the housing. The first and second panels can comprise alternating portions of different opacity and/or polarization. The assemblies include a drive assembly that is driven by a motor to move the movable panel relative to the first panel. As the movable panel moves with respect to the second panel, the alignment of the slats for each the panels changes, varying the amount of visible light that is allowed through the assembly.