Before purchasing I assumed I would need a J-Channel that would extend the full width of my table. I was wrong. These smaller sections are absolutely fine. I actually cut a few sections in two with a utility knife to allow for more flexible assembly. I have a lot of cables on my desk so it took me about 1-1/2 sets. and installed two rows of J-channels. One for power and the other for everything else video and USB. Now I can vacuum without worrying about vacuuming the cords.
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