With the EM3 window lock, Scheffinger has a product, which presents itself as an innovation with high quality and functionality. The window lock is completely made of steel (solid-wall) and suitable for every window or door which opens to the inside. The characteristics of the product lie in its construction: it only consists of a sleeve and a bar. Opening means taking the bar out of the sleeve and fix it in another position – loss eliminated. Five different installation positions are possible. Thus, the user can choose the ideal position where the lock fits best and is easy to handle. Mounting is done in some minutes. The sleeve is screwed to the frame, the windowsill, the wall or the cornice and the bar is stuck into the sleeve.