BQLZR 140mm PVC Black PC Cooler Fan Dust Filter Dustproof Case Cover Computer Mesh Pack of 10 Suitable for: for the home computer chassis fan dust, speaker speaker grilles and a variety of electrical and electronic products speakers dust protection. Help to keep your PC and PC components clean,minimize the noise from the fan and extend the life-span of your fan. Note: The screw is standard. Hole distance is matched with the hole position, if the hole is not match, you can modify and adjust according to the actual situation.