Review on 🔒 Premium 120mm Computer Fan Filter Grills: Ultra Fine Aluminum Mesh, Silver Color - 4 Pack with Screws by Reginald Hamilton

They were easily added to a pair of unfiltered fans in my case. The mesh isn't the thinnest I've seen so it doesn't really catch very small items, but they don't seem to reduce airflow and are scratch resistant. I assume they will probably reduce the dust to a reasonable degree, but not completely. The time will show. They are definitely good enough to catch human or animal hair, so they are good for pet owners.