UPDATE 3/18/2023:
-Updated descriptions and instructions
-Included 120mm design (I haven't printed it to test, but hole patterns are spaced for 120mm case fans)

Fan filter grates for Corsair C70 (May work on other models?)

Fasteners must be printed horizontally with supports for strength or they will break very easily.

I designed these because I didn't have any plans to add case fans to my side cover, and wanted to prevent (any more) dust from getting in my PC case. These are designed to fit 140mm hole patterns on a Corsair C70 Case with rubber antivibration grommets.

I have installed them on my case with the fan covers on the outside and basic Silverstone magnetic fine PC dust filters on the inside of my case. Hardware can be mounted either with washers on inside or outside. I mounted the washers on the outside so I didn't lose them inside my case in the event they ever came off.

Washers simply clip onto the ends of the fasteners to hold everything together.

Prusa

i3 MK3

No

Yes

100%