TV LED mount so you can install the LEDs pointing out instead of at the wall.

Print at 100% infill. PLA is good enough. I used black PLA+.
Do not resize corner piece. The slit in the corner piece is incase you have an LED strip with the extra piece that allows you to make corners easier. Just tuck that extra between the slit. for the straight parts, just use your slicer to make longer. Install to back of TV, use nano type tape, 3M tape or glue. I used nano tape from TEMU.

Also if you have a TV with a curve you can use a heat gun to carefully bend it around. I had to do this on my straight run to add a slight bend.

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100%