This is a support for the fan 60mm that we used for remove the humidity from the outdoor electric box, see the images below.
Here there is the files, the project is did using SketchUp Make (17.2.2555 64bit) and Cura (4.4.0), the GCode is ready to use for Creality ENDER 3 using PLA.
The images below refer to our first release of the fun support.
The last release (present in the download file) there is additional protection towards the fan body.