BLANKA System - Blanka is an elegant and modern type of window blinds. Simple and easy to use chain mechanism allows for smooth and quiet control, and a wide range of fabrics makes that BLANKA blinds are a very popular form of curtains. They can be installed to the window sash or outside the window opening on the wall or a ceiling. Reinforced construction makes that the blinds can be used for covering larger areas such as shop windows and window recess.