1、PVC Material: Made of PVC material, no deformation at high temperature, fire retardant, easy to clean, dust proof and ventilated. You will get 4 pieces of fan grille dust proof net. 2、PC Fan Dust Filter: Help to keep your PC and PC components clean, can protect you computer from overheating, minimize the noise from the fan and extend the life span of your fan. 3、Convenient Design: Magnetic design, easy to install and disassemble. It can be easily placed in any position on the metal chassis without any tools or screws. (it is also compatible with traditional screw mounting). 4、Performance: Provides excellent dust removal performance, which is very suitable for keeping fans and computers clean and prolonging the service life of computer hardware. 5、Magnetic Frame Computer Fan Grill: Idea for your desktop PC fan or case prevent dust, prevent the cable being cut by the fan, protect finger safety etc. Suitable for PC fan and chicken coop vent.