I am currently doing calculation of surface area and I noticed that for some duct fittings, the faces that dynamo is extracting is different from the actual surface of the 3D model.
Hi @blsalvio its a bug, it’s depend of the type of your family instance and the detail level asked, but maybe you can build your duct fittings geometry with the workaround of @Kulkul and then get the face, or you can get the shape of duct fitting by Rhino inside…
Cheers