An aluminum exterior, PVC interior, and a steel core. Large steel reinforcements with optimal form fit ensure that the IsoStar Aluminum HStec lift-and-slide system has the robustness that you have always come to expect from UNILUX.
And thanks to its triple-pane glazing, it also achieves exemplary insulation values to boot. The cold stays outside, and the heat inside. Like this, you can enjoy the spectacular view even throughout the colder months of the year.