ZYAMY 4pcs 140mm PC Fan Dust Filter Magnetic Frame Computer Fan Grills Dust Mesh PC Cooler Filter Screen Dustproof Case Covers 14cm x 14cm, Blackcolor: Black Material: high quality PVc + magnet Thickness: 045mm Hole: 08mm Function: Help keep your Pc and Pc components clean, minimize fan noise and extend the life of the fan Effectively reduce dust a..