The distance between rods is 12 centimeters. The distance from the first rod to the wall is 14 centimeters.

The “rod16” part is for the thinner telescopic end of the RÄCKA rod, and the “rod19” is for the main part of the rod. 

No mandatory extra parts are needed, but a ~3mm screw or anything to put into a hole to fasten this on the metal bracket.

The source code is attached.