An arch head double-hung window is a type of window that features a curved arch at the top of the frame. The window operates using a traditional double-hung mechanism, consisting of two sashes that can be moved up and down within the frame using weights and pulleys or springs. The arch head design provides an elegant look to the window, adding architectural interest to the building's facade. 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 window can be locked securely when closed, providing ventilation and natural light to enter the room. The arch head double-hung window is a popular choice for homeowners and architects seeking to add character and charm to their building's design.