1、Small Aperture: The PC case cooling dust filter features small apertures that filter out fine dust particles, effectively blocking dust and maintaining a great and clean enclosure. It helps to keep the indoor space in a good, clean condition. 2、Slick Airflow: With a filter ventilation rate of up to 65 percentage, airflow is slick, providing significantly better cooling performance compared to regular filters. It can be used for household computer case fans, dust filters, speaker grilles, and other appliances/electronic products requiring dust protect. 3、Sturdy PVC Mesh: The toughness of the PVC material provides strong pressure resistance, making it superior to other plastic meshes. The magnetic fan dust filter supports 140x280mm fan ventilation holes, offering convenience and user friendliness. 4、Magnetic Dust Filter: The soft magnetic PVC grille is easy to install and effectively isolates dust and dirt. The magnetic frame design ensures cleanliness of the case or power supply, enhancing cooling efficiency. 5、Easy Installation: The magnetic fan dust filter can be easily installed on the ventilation holes of the case or power supply, effectively preventing dust and dirt from entering. Users can quickly install it! Apart from mounting on the case, the magnetic fan filter can also be applied to the power supply. It effectively prevents dust from entering while drawing in cold air.