*REALLY WORKS* Centauri Carbon Silencer Quiet DUAL Fan Shroud Muffled Intake Exhaust & Improves Internal Temps

All props to Pattersaurus on Thingiverse for this.
 

* You'll need THREE  M3 x 8mm Screws / Bolts (no nuts) to attach this to your machine. *

 

****PRINT ORIENTATION****  - fins and holes face down on plate: Just as the first photo, place it on your plate like that, as if you were going to screw it down onto your plate / screw it into the case. Hopefully this helps as many comment on printing it wrong.

Supports: Normal - Zig Zag 15% or Manual / Auto Tree's. If you do any manual supports I'd suggest going really really light or not putting any supports densely packed near the fins on either side. Greatly helps with removal. Remember, the interior does not need to be perfectly smooth, the opposite is actually a benefit.

Brim: Your call, I use them for piece of mind.. If you're not confident in straightness, shrinking, or bowing, use a brim. 
 

HEPA Filter: https://www.amazon.com/dp/B0782T7L6P?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_6

Removed holes and improved some angles. Add HEPA or anything you want on the interior of it as well.