Cable Race Way for cables in corners

For my home Theater added 4 speakes to get Atmos sound.

The cables came down in the corner oft living room.

My problem: I can not get a corner cabel race way.

Solution: Use a regular square raceway (40mm in my case) and make custom holder.

These holders can be mounted in a corner.

I took a regular square cable race way, and took only the cover.

IMPORTANT: The holder must fit the cover.

In my case I designed all in Design Spark Mechanical.

The source will can be downloaded