Partition systems comprise a track and at least one partition configured to hang from and move along the track. A control box configured to contain at least a power supply for supplying power to a drive system, a floating jamb, and a trolley configured to attach to the floating jamb and rollingly engage with the track are also included. The trolley comprises at least one frame member comprising a jamb attachment portion configured to attach to the floating jamb, a distance from the jamb attachment portion to a rearmost surface of the at least one frame member opposite an end of the at least one frame member configured to face the at least one partition being less than or equal to a thickness of the control box in a direction at least substantially parallel to a direction of movement of the trolley. At least one support roller is attached to the at least one frame member and configured to engage with the track.