As smaller houses are getting more popular and space is being confined, the demand for ventilation increases. In order to make the most efficient ventilation, Dual Motion Window has the function that enables users to open both sides of the window with a single move. It has a simple structure with a rail inserted inside the window without any complicating extra devices. Dual Motion Window’s user-friendly design brings convenience when ventilating is demanded. The mode is changeable to be able to open only one side of the window if needed with simple mechanism in handle. The benefit of Dual Motion Window can be vast in different circumstances.