Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4307226.

Our windows have a small ventilation slot and this thing will help me put two 120 mm computerfans on them to help air flow during heatwaves (or when your working from home and have your computer run folding@home.

I split the window adapter in two parts in prusaslicer and glued it, and the big fan part was printed standning on the pins, with wide support set for build-plate support only.

Print was ok, not perfect on the inside, but life is too short for removing support, but does work!

Feel free to remix, f3d file is in there as well.