Fans filter grill usually can prevent the dust from getting inside the computer case, which can solve the overheating problem. Great for the computer or other electrical equipment cooling fans system. Overall Size: 140x280mm / 5.51"x11.02" PVC material has good corrosion resistance and is durable. The mesh screen design can provide dust protection while keeping the airflow good. for most standard-size fans. Magnetic frame, so just put it on your computer fan air inlet places, no tools and screws needed. Please check the size of your fan before purchasing.