PAS sliding systems are models that the sash works outside of the case. The sash is capable of getting at ventilation position when the window is closed as classic window frames. There is also an additional ventilation system where the sash moves off the case 4 mm from four sides in order to improve the security and have an air circulation. Moreover, the sash pulls itself to the case gap while closing in order to make it easier for the user to move high weighted window thanks to this new mechanism. The system offers a threshold and a sealed isolation as well.