Alright, so I printed this in Creality blue PLA @ 195c, and eSun orange PLA+ @ 205c.
.16mm layer height, printed outer layers at 45mm/s and infill/inner walls at 70mm/s.
I had some trouble assembling everything, mostly because my prints on the parts ended up having weird clearances. Everything is slightly crooked in some way, I'm sure eventually I'll get sick of seeing it and take a file to it in an attempt to make it look nicer.
I am getting bad PWM whine from the 2 fans since I'm having to run them so slow. Eventually I'll buy an arduino so I can fix that.
Aside from my incompetence, great parts, really annoying to assemble though.
I like how it's not absolutely massive like many of these duct systems are.