S System Clips
It all starts with the desired louver type. The louver type defines the required clip. A clip connects the louver to a rack arm. The default S System clip is used with most louver types. Some types however require a custom clip, because of their size (height) or their shape.
The clip is a two part mechanism. The pivot arm is connected to the rack arm, while the slat clip holds the louver. Jointly, the clip allows the louvers to open and close. Ingenious in simplicity.