Satsana 5015-4020 Fan Duct w/ BLTouch for Ender 3

thingiverse

I've checked out mday10's thing on Thingiverse, which has all the information needed, including his BLTouch mount and a pressure clip that he designed. I also took a look at his creation, which is a bit more rough around the edges than the original, but it still manages to hold an 4020 fan in place with ease. Overall, I think you'll find it quite useful!