PANO-MOUNTS 287mm 140mm x 2 PC Fan Dust Mesh Filter PVC Computer PC Case Dust Proof Filter Cover Magnetic Black 2-Pack

As someone who has had to go to great lengths to keep dusk out of their tower computers a simple and easy solution is always preferred and Having to install custom-fitted mesh screens that can be hard to clean after being installed. These magnetic covers can sit on the inside or outside of the case over the intake fans, they do not restrict the airflow very much and the magnets are strong enough for a good seal. I also cut and adjusted the magnet locations to get more surface area. These covers are large enough to cover most vents but I recommend you measure your vent locations before making the purcase.

Excellent product! I purchased this to filter the back panel intake fans on my MuseTex K2. Packaging is super nice, filters are high quality, and installation is as easy as letting it snap on to your case. Airflow is not restricted, and the filter with help keep a ton of dust out :)

I got two, one for each PC in the living room where the cats spend the majority of their time. They fit the towers perfectly, were easy to put on with the magnets holding it firmly in place, allows airflow, and keeps out the cat hair!

I would be cautious using these for high flow in-take fans. This would probably work best for slower fan configurations as they mesh is very tight. The quality of them are quite nice though.

Magnet strip came off of one of them but definitely catch alot of dust from my house