More light despite sun protection? No contradiction with the KV 440. The sun and privacy protection is fitted already between the panes with this flush window and offers quadruple protection in only one window with best thermal insulation and sound reduction values. Next to blinds and Venetian blinds, the opaque Duette blind offers absolute privacy protection. Additionally, I-tec shading can be controlled without external power source via photovoltaic modules. I-tec SmartWindow App facilitates convenient operation via tablet or Smartphone.