This is my first design printed in PLA with supports. Infill 20% if you have bad adhesion on bed print with brim on the pins so they don't pop out of place during print 

Recommend PETG if the temps are too hot behind the servers.

Printed on elgoo neptune 3 pro

Used cura with engineering profile presets

20% infill

grid pattern

with support

to install I inset pin halfway on the wire manager and slid on to the rail then push pin in making sure it sits in the cut-out of the rail.