Shop-Vac 9030700 High Efficiency Replacement Cartridge Cleanstream FilterGore high efficiency filtration. 95 percent efficient down to 0. 3 microns. For fine dust & debris, such as drywall dust. Sawdust, cold fireplace ash, etc, use for wet & dry pick up, exclusive non stick surface. Maintains vac suction. Resist clogging, easy to clean. Just tap or rinse, reusable. For shop vac brand wet dry vacuums 5 gallons & larger Gore high efficiency filtration 95% efficient down to 0. 3 microns For fine dust & debris, such as