120 mm Case Fan to 4 Inch 45º elbow duct with internal fins (REMIX)

I combined the two below designs to create a custom 120mm case fan exhaust to 4" dryer duct. I use this to pull air away from my PC and keep the ambient room temperature cooler. it could be used for solder fume extraction or any number of other things where you'd want a shortened flange and adapter combination at 45º

https://www.thingiverse.com/thing:4651750

https://www.printables.com/model/444538

EDIT: After printing, DEFINITELY use much less support infill, I went down to 10% on the branches and 0% on the trunks, 25% on the interface.