The file 'Satsana Ender-3 V2 Fan Duct X 3D Printer Model' is (stl) file type, size is 2.4MB.
Here's the fan duct for the Ender-3 or the Ender-3 V2.
https://www.simscale.com/projects/SeanChang/ender-3_v2_4010-4020_fan_duct/
Cable_Cap.stl | 10.9KB | |
Ender-3_V2_4010-4020_Fan_Duct.stl | 5.9MB |