Prusa i3 Mk3 Blower Cover - Louvered

In order to install, you will need to replace the factory 18mm long M3 socket head screws with 20mm long M3 flathead screws.

I also designed a similar fan cover for hot end fan - search for "Prusa i3 Mk3 Fan Cover - Louvered". You can see this in the pictures showing the part installed.