The file 'Basic 4in – 3in Reducer For Bathroom Fan 3D Printer Model' is (stl) file type, size is 119.4KB.
Basic Duct Reducer. Specifically made for a bathroom ventilation fan which I was retrofitting.
3" 7/8 ID to 2" 7/8 OD. Meaning it fits OVER the OEM adapter and INTO a 3inch duct.
Very specific use but maybe someone will save 5 minutes CAD work.
3reducer_v3.stl | 411.4KB |