The Live window, with lift and slide opening, reaches the goal of a single window, even in the presence of two or three saches, which are typically interrupted by the vertical profiles of coupling. This extraordinary result is achieved thanks to the use of a different material employed for the forth side of the wood frame, alloy mineral, which enables the reduction of the coupling between the saches, from 90-110mm to only 17mm, and invisible from the internal and external front view.