ALUMIL proudly presents the remarkable system SUPREME SF85 for exceptional oversized folding doors with ultra-smooth and long-lasting operation, minimal design and extraordinary narrow sight lines (105mm sash to sash), as well as outstanding performance in terms of water tightness, air permeability and wind load resistance. The system is ideal for high-end residential use, offering solutions with fewer and wider vents (up to 1.5m panel width), as well as for heavy-duty commercial projects, which require many vents and up to 4.0m high structures. Moreover, the system offers a great variety of solutions, including semi-structural and corner versions, with odd and even number of vents. As nothing is left to chance by ALUMIL, the system has been engineered so as to offer enhanced safety and certified RC2 class burglar resistance thanks to quadruple locking latches and anti-lift roller hinges. Finally, the system stands out also for its extremely high thermal insulation for maximum energy savings with Uw = 1.0 W/m2K, for 3-panel folding door with dimensions 3.0 x 2.6 m and Ug = 0.6 W/m2K.