The file 'Geeetech G2S Pro Hotend Fan Duct 3D Printer Model' is (STL) file type, size is 38.2KB.
I wanted a duct to direct the hotend fan's air over the throat of the hotend. Bolts on in the same spot, and uses the stock fan. It seems to help shorten the thermal transition zone, making the hotend less likely to jam.
