For my Sliger CX4000 rack mount case I needed some front fan spacers because my AIO was colliding with the USB cables as well a an additional rear mount option for better air circulation.
Lower fan part can be simply fixed with two cable binders for even more sturdiness...
Can be printed without supports.
Spacer thickness can be easily “extended” in Prusa Slicer.
_______
If you like my uploads buy me a coffee -> https://bit.ly/pwave-donate