140mm 5.5inch Magnetic Frame PVC Dust Filter Grills - Computer Case Fan Dust Proof Cover Black for PC Ventilation & Cooling Systems 5-Pack

My PC is a push layout as I only have 2 fans. So I put the filters in the air intake areas. I also cut the filter in half and put it where my GPU exits but underneath as there are holes and my PC has negative air pressure. I did not put the filters on my fans as they are exhausts and I do not need to filter the air coming out of my PC, just the air coming in.People argue that the holes are too small and choke up the airflow. I can see that if your PC has only intakes or is a balanced layout with only 1 intake. But for someone like me who doesn't need to put the filter on my fan due it being exhaust, I have no issues. I just put it in the air intake area where will come in naturally because of the negative pressure created by my only exhaust layout.

I used these to replace plastic frame filters on my custom built tower, and they work fine when stuck to a mostly metal surface. Much easier to clean. I kind of wish the magnet was a stronger at the 4 corners, as I was hoping it would stick to the 4 screws that hold in the side intake fans on the polycarbonate window but alas it is not. I even tried using small rare earth magnets on the inside to boost the magnetic force, but it didn't work.Luckily I ordered them at 140mm instead of 120mm so one edge reaches the metal frame of the poly carbonate window.Overall they are great cost to performance ratio, and would buy them again if needed.

Used these for a custom entertainment center. Routed out some holes, glued the magnets flush, slapped this bad boy over the top: it does the job. Took the spares and slapped them onto a PC and guess what: also does the job

Overall works great. Magnets could be a bit stronger but it holds. Keeps my pc noticeably cleaner and fits well on the fan covers. The fans seem to work just as well still too.

Great product as advertised. Yes, some airflow is diminished but the cooling power of the unit was not affected.

Very easy to use and fit well. The catch allot of dust. Unfortunately to do so is at the expense if airflow. With various flow angles, I compared chipset and CPU vrm temps with the filters off and on. I would estimate there was a 40-50% loss of cooling efficiency. It was great at quieting the fan chop but at a price. I eventually opted to leave them off, deal with the dust, and run the fans at 70%.

If you don't have a metal frame to receive this, you'lr ahve to improvise somethign as there are no clips to serve as alternatives to the magnetic strips.

Doing their job keeping the inside of my computers cleaner. No pet hair making it past these screens.