Feature:1. Fine Aperture: PC fan dust mesh filter adopts fine aperture, which can filter fine dust, effectively block dust and keep the case freshing and clean. Keep the indoor space in good and clean condition.2. Fluent Airflow: The ventilation rate is up to 65 percent , making the airflow fluent, which can be used for home computer case fans, dust filters, speaker grills and other electrical appliances, electronic products dustproof.3. Reserved Screw Holes: Precise cutting process and one piece non marking magnetic frame, reserved screw holes for easy installation of non ferrous metal cases. For micro curved surfaces, it can also be tightly adhered with good dustproof effect.4. Sturdy Nylon Mesh: Computer case fan dust filter is made of nylon material with high toughness, creating a strong resistance to pressure. Magnetic fan filter supports 120mm fan ventilation holes, convenient and thoughtful.5. Magnetic Fan Filter: Easy to install and effectively isolate dust and dirt. Magnetic frame design ensures the cleanliness of the case or power supply and better heat dissipation. The filter can be easily installed on the ventilation holes of the chassis or power supply and can effectively isolate dust and dirt intrusion.Specification:Item Type: PC Chassis Dust FilterMaterial: Nylon, Soft MagnetProduct Size: Approx. 120 x 120mm or 4.7 x 4.7inApplicability: Suitable for PC chassis power supply, fan ventilation port.Package List:5 x Dust FilterNote:Please allow some error due to manual measurement.