●ELUTENG 80mm dustproof cover can can reduce dust into computer chassis while cooling fan working, to keep inside of computer clean. ●Nylon filter dust absorption up to 89%, reduce dust damage and extend fan life-span. ●Dustproof cover can minimize fan noise to provide you a quiet environment.(Note: May affect air volume) ●ABS resin material with strong heat resistance, washable nylon filter can be cleaned repeatedly. ●Easy installation, only 6 steps, you can install it on your fan or other electronics.