I have a definition that creates faceted polysurfaces in Rhino. I want to simplify this geometry as much as possible using GH without rhino commands (which I used to clean up the geometry). I’m including the rhino file showing both: input breps in gold and the desired output geometry in green and the GH definition. I’m thinking the inner and outer side edges of the top and bottom caps can be used since this geometry represents ducts that runs overhead in a building (center, right, and left) the script correctly produces double-height ducts on the sides (by design) so I anticipate another layer of data filtering before the final product. Second post ever so please be patient