YIMATEECO120mm Dust Filter PC for Computer Cooler/PSU/Routers Nylon 80 Mesh, Magnetic PC Fan Dust Cover Mesh Cooler Filter Dustproof Computer Fan Grills (Nylon, 120 * 120mm, 2pcs, Black)

Does what it’s says. I couldn’t use the screw holes to fix it in place due to some of my screwing points being sunk into the case. But the thing is magnetic and stays in place. Seems to be good quality and doesn’t restrict the air flow to any noticeable degree.

4 methods of fixing, depending on nature of cabinet - slide, magnetic, screws or adhesive pads.

Very good product, no dust inside PC and strong holding 5 stars!

Everything is good except the weak magnets

Does what it says. Works fine for me

If they fit your case, they are ok. weak magnets.

Okay so I have returned these but that's not because they are bad, they just made the argb fans in my rig look square. Upon inspection they seemed quite good, came with all the extra screws needed and had very fine filters and didn't really restrict the flow much. Unfortunately though they just made my fan lights look wrong as they cover the sides of the fan by about 3 or 4 mm making the fan lighting effect look square. If the argb is not a concern for you then I'd suggest getting them.

I was looking for a 140x420, but I can't find one, so I opted to purchase a 140x140 pack, along with a 140x280 pack.140x140 pack:Only 1 face is magnetized, and the magnet force is too weak, so it keeps falling off. I could use screws (size 140x140 has screw holes), but this defeats the purpose of getting magnetic filters for easy removal and cleaning.140x280 pack:Again, the magnet is too weak, and only 1 face is magnetized. Also, due to the width of the magnetic strip, any screws from fans/radiators will prevent the magnet strip from fully mating with a case.This results in gaps, and then the filter falling off with the slightest vibration.Given the issues with both sizes, I cannot recommend any of the sizes in this listing.