High quality cable channel.
Screws and dowels enclosed, wall mounting very easy.
Length can be cut using a simple hacksaw.
If used with me on the wall to cover the drooping cable underneath the TV.
It fit more Kabekl purely as I suspected: with me stuck 5 cables (power, LAN, HDMI, optical, satellite), a cable would not fit in.
The only point deduction:
It is very difficult to open the cable channel, I have succeeded only by levering with a screwdriver. I have opened the channel logically prior to assembly. If I have to open the channel to the wall, which would certainly problematic.
Would you buy the channel again.