Review on SilverStone Technology SST-FF81 SST-FF81B 80mm Fine Fan Filter with Magnet Cooling - Black by Joz Lowe

This filter is excellent for its intended use. I like it. The filter medium is very, very fine-meshed. It needs to capture very fine dust particles, so it will likely need regular cleaning, more often if you're in a dusty environment. The filter frame is made of smooth plastic on one side and does not stick to my computer case. The opposite side of the filter frame is magnetic enough to stick to my computer case. Either there are two layers of material in the frame, or it's a question of polarity. I noticed that a few reviewers said this filter is not magnetic or not magnetic enough to stick to a computer case. If you think this is the case, flip the filter over and use the other side against your case. If it still doesn't stick, your case may be aluminum or even plastic. It could have had stronger magnetism in the frame and it would be nice if there was some sort of minimal support frame on the filter surface to help fine cleaning. - Mesh filter material which is very soft and may or may not sag over time. For these two reasons I give 4 instead of 5 stars.