The present paper documents the development process of a shading system, developed for an Austrian architecture agency. The construction consits of vertical blinds and is thought to shade a two-storey, 12 meters long glass front. Traveling as well as locking and turning at certain positions needs to be possible. The development process is executed in accordance with the "VDI 2221: Systematic approach to the design of technical systems and products". The results of this development are the draft of the construction as well as the proposal for a prototype for testing of the functionality of relevant parts.