Feature:1. Small Aperture: PC case dust cover with fine small holes to effectively filter out small dust, keeping the case clean and fresh. Maintain a cleaner indoor environment.2. Wide Application: With a 65% ventilation rate, better heat dissipation than regular filters. Suitable for home computer case fans, dust filters, speaker grilles, and other electronic products for dust prevention.3. Strong PVC Mesh: PVC material provides a strong pressure resistance, which is better than other plastic nets. The dust filter supports 120mm fan ventilation hole.4. With Screw Holes: The four corners of the filter are precut with screw holes, to facilitate the installation of non ferrous metal housings; easy to install and effectively isolate dust and dirt.5. Magnetic Design: Dust filter can adhere to the micro curved surfaces and can be easily installed on the ventilation holes of the chassis or power supply, and can effectively isolate dust and dirt from intruding.Specification:Item Type: PC Case Dust FilterMaterial: PVC+Soft MagnetColor: BlackSize: Approx. 120 x 120mm / 4.7 x 4.7inApplication: for PC Case Power Supply and Fan Ventilation.Package List:10 x Dust Filter