Flush transition from frame to sash combined with integrated sun and privacy protection unites the KV 440 to one unit. Blinds, Venetian blinds or the opaque Duette blind are integrated between the panes and therefore protected from dirt. Enjoy quadruple protection in one window with perfect sun and privacy protection, thermal insulation and sound reduction. I-tec shading can be controlled without external power source via photovoltaic module and batteries. I-tec SmartWindow App facilitates convenient operation via table or Smartphone.