Rack Ear Warmers

When building my homelab rack I made great use of this Parametric shelf creator. My only issue was that these are front-loaded and I was concerned of my IT kit accidentally falling out of the rack. After too much thought, I came up with the idea of having a set of inward facing ears which could be easily inserted and removed without needing to swap out the whole shelf.Features:Can be added to existing shelves without having to remove the shelfEasily mounted: just loosen the mounting screws of your rack shelf and slot in the "Ear Warmer" - reverse to removeFully customisable to accommodate different heights (1-4U) and widths of devicesCan be used on one or both sides of the shelfMinimal printing time and filamentUsage:Click on the “Customize” button to change parameters, then “Generate” & "Download".you should change at least 3 parameters:u height - the rack U sizeright flat offset - the width of the ear (not including mounting dimensions)right edge height - the height o