Rubbermaid/Closetmaid Free-Slide End Cap

I am not sure if this is for the Rubbermaid or Closetmaid versions, but it looks just like this one:  https://www.lowes.com/pd/Rubbermaid-FreeSlide-Corner-x-12-in-White-Universal-Wire-Shelf/50336061  Check the measurements of your shelves to confirm.

1. Updated the size to match the model that is 66mm from the top to the bottom rod on center.  Original model was 55mm center to center.  
2. Cleaned up the base to make it print faster
3. Simplified mesh