HFEIX，120mm PC Fan Dust Filter, Optimized Mesh, 10 Pack Black Computer Fan Gr...

The media could not be loaded. Great item, stops all the dust from entering my pc, doesn’t affect noise, honestly makes it quieter, it functions as it should, magnets could be stronger but not bad for price. Fits good, couldn’t ask for more.

I have a combination server/workstation which has 7 fans. 2 are exhaust fans and occasionally (usually after opening up the case to clean everything, re-seat boards, etc.) a power cable (or the controller cable to the liquid cooling system) will find its way into one of them, and while there is no damage, the noise is very irritating. And of course I also have to reopen the case and move the cable, etc.Placing one of these on the two exhaust fans makes it a simple matter to make that issue go away permanently.I had already installed them years ago on the other 6 computers here, and they have worked well there.I ordered these when I finally found them on Amazon (too lazy to do the correct search to find them any sooner, I guess - or maybe it was out-of-sight-or-earshot=out-of-mind).They work particularly well on the bottom-mounted intake fan which is next to the PS and which was the more likely fan to have the wire-hitting-fan blade problem intermittently (off-on-of-on-etc.) than the top-mounted exhaust.They work well as dust filters on all of the bottom-mounted fans, BTW, and I'd say they are very useful.They work well for both 120mm and 140mm fans, BTW, although IIRC I had to drill out one of the sets of holes (the 120, I think - but it has been a few weeks and it may have been the 140's... sorry), an operation which took a few seconds at most.Definitely useful and heartily recommended.

These work ok but don’t hold as strong as I’d like. Wish they used stronger magnets at the corners.

Great filter. I needed one quickly, and so pleased!

If you have exposed 120MM fans that need a filter. These go right through the mounting holes and work great -- Vacuum off once a week and you are all set.

Let's be honest - if you want 'filtration', you are going to kill air flow! These filters are perfectly sized, easy to install, and do exactly what they advertise.But just like any other filter, they will noticeably reduce your fan airflow. *I was using them Noctua fans - NF12 and NF-A14-PWM, and NF-A14 5V PWM

These are a great size to use together to filter other things such as my space heaters. Are solid so can easily to fitted.

Works really well.