Sliding windows can be very heavy to open. ET Window has been designed so that everyone can open the window easily with less effort. ET Window is based on the princple of magnetic attraction. There is reduced surface friction, so that it is much easier to open and close the window. To open the window, all you need to do is push the button. The window simply slides open. The user’s wrist is protected from twisting. The simplified window frame matches with all sorts of styles of interior. And because the frames are hidden, the user gets more light and better views.