This is a cable management tray cover meant for an Fully Jarvis standing desk. It is mounted on the frame ends as Fully calls them. It has been heavily inspired by the great idea from MyStoopidStuff.

Cover dimensions are 150x120 mm and it is 4 mm thick. Distance from the edges of the inner ridges is 95 mm and they nicely center the cover once it is mounted. There are places for 6 8x3 mm magnets on each side, but I ended up using only 4 each side as that was more than enough. Magnets just press fit in.

Longitudinal holes are meant to be cable tie down points if needed, and circular holes are finger holes to be able to lift the cover once it is in place (if you go overboard with magnets :).

I printed mine with PET at 0.2 mm layer height and 15% gyroid infill. I was a bit concerned about the rigidity but the part is very sturdy.