The Rehau S920 system is designed to cover even larger openings and offer maximum durability, noise reduction, and energy savings. The profiles of the S920 series, combining the insulating characteristics of PVC and the modern design, create a pleasant atmosphere and do not allow the exchange of temperature with the outside environment. With the innovative reinforced design of the system, it is possible to build openings up to 8m wide and 2.8m high.