120mm Fan to Duct adapter

cults3d

I built this setup when the heat from my Antminers became unbearable in my basement. They attach neatly into standard 120mm fans, making them the ideal size for 4-inch flexible ducts used in household dryers. I designed the adapter using Imperial measurements, so be sure to double-check your settings before printing a small adapter. EDIT: I've revised it slightly to fit metric units as originally intended. It should now be a precise fit for a traditional 120mm fan and a standard 4-inch duct.