Forster unico XS is a system that provides thermal insulated steel windows and fixed glazinga with ultra-slim facings. At the same time, it opens up a diversity of applications. This applies to the numerous opening variations as well as the possibility of installing fillings up to 60 mm to achieve very low U values and excellent sound insulation values. The unique profile design made of 100% steel is ideally suited for renovating old or historic buildings and for modern glass constructions.