The 4900 sliding windows and doors system, with its minimalist design and straight lines, has a visible area amounting to only 35 mm. It stands out through the possibility of using insulating glass units up to 36 mm thick which significantly improve thermal and acoustic performances. Each sash can support loads of up to 240 kg, facilitating the creation of large elements up to 2200 mm x 2600 mm. It is an excellent choice for projects aimed at enhancing light and efficiency, both indoors and outdoors.