We offer two types of vertical sliding windows.The European version combines the technology of the Tilt-Turn window with a sliding window. Optionally, one or both of the sashes can be designed to slide.
At least one of the sashes must also tilt so as to clear the other sash when moved.In the American „double-hung“ version, the offset sashes can slide past each other with the aid of a spring mechanism or a hidden weight.