A partial arch head double-hung window is a type of window that features a curved arch at the top of the frame that is partially divided vertically. This design creates an elegant look while maintaining the traditional functionality of a double-hung window. The window operates using weights and pulleys or springs, allowing for the sashes to move up and down within the frame. The frame is typically made of wood, vinyl, or aluminum and is designed to fit into the opening of a building's exterior wall. The partial arch head design adds architectural interest to the building's facade and is a popular choice for those seeking to add character to their home or commercial space.