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Product Description
This is a sleeve for an Ergotron LX LCD monitor arm, model number 45-179-194. If you need to print this yourself or want to modify it, the original design is here:
https://github.com/dacut/3DDesigns/blob/main/MonitorStandRing.scad
https://github.com/dacut/3DDesigns/blob/main/MonitorStandRing.stl
I uploaded this to ShapeWays since I don't have a 3D printer and needed it myself when one of mine went missing. There's no markup on this; just ShapeWays' costs. Feel free to download the STL file for your own use!