Small Mesh Holes: This PC fan dust filter mesh features fine mesh holes to effectively block dust and keep your case clean. Maintain a better and cleaner indoor environment. High Breathability: Ventilation rate up to 65% for better heat dissipation. Can be used for computer case fans, speaker mesh covers, and other electrical or electronic product dust prevention. Reserved Screw Holes: Precise cutting process and a one-piece non-marking magnetic frame, reserved screw holes for easy installation on non-ferrous metal housings. Can also be tightly attached to slightly curved surfaces. Stable Nylon Mesh: Nylon PC chassis fan dust filter mesh, high toughness, pressure resistance, supports 140mm fan ventilation holes, easy to install, effectively isolates dust and dirt intrusion. Versatile: The magnetic dust mesh cover for the case fan can be applied to the power supply in addition to being installed on the case. It can effectively prevent dust from entering while drawing in cool air. We offer not only high-quality products but also long-term customer service. When you purchase our products, you receive comprehensive support even after the purchase, allowing you to shop with confidence and satisfaction.