Attached at the corners to help when replacing the screen, when it's all done and the screen will be pressed into the new adhesive, this is to help keep it straight.
I haven't tested it, but because the screen for the Surface Pro 4, 5, and 6 is mechanically identical, this will probably work on all three. (picture is of replacing a 4's with a 6's replacement screen)

Print instructions

Doesn't matter, I used 0.3mm layers and 15% infill.