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The VISS SG parallel vent window integrates not only seamlessly into the VISS SG façade by which the all-glass optics can develop their full effect but it can also be installed in the standard VISS system and the VISS Basic System - for the face widths 50 mm and 60 mm. The VISS parallel vent window can be installed as a mere SG variant or alternatively as a variant with a subtle glazing bead. The glazing bead design is also used to mechanically secure the outer pane. In the SG variant, the panel does not appear visually from the outside. The steel material allows maintaining a narrow decorative interior and at the same time the implementation of large glass surfaces which convey the feeling of wide space. The use of double and triple insulation glass up to 58 mm glass thickness and the possibility of natural ventilation take into consideration the increasing requirements of energy saving and contribute to the wellbeing of the user.