Abstract: A room dividing partition includes a plurality of upright utility modules with at least one module being movable to selectively close a span or an opening, thereby separating an area into two smaller units. The movable module comprises an upright rigid structure having a utility depth for storage or other purposes and a plurality of friction reducing rollers which engage one or more tracks positioned along the floor. In order to stabilize the module and prevent tipping, a guide rail extends between side walls of the area across the opening. A rail engaging gaff projects from the movable module with the gaff being movable along the rail when the module is moved. The module may include various storage devices such as shelves, cabinetry and self-contained furniture articles such as table or desk tops.