The CRAFTSMAN HEPA Media Filter for wet/dry vacs is designed to tackle allergens, pollen, cold ashes, drywall dust and everyday dirt like sawdust, wood chips, job site debris and car or truck dirt. This efficient cartridge filter is made of HEPA media that captures up to 99.97 percent of particles as small as 0.3 microns. The Qwik Lock Filter Fastening System makes removing and installing wet dry vacuum filters quick, easy and secure. This filter is compatible with all current CRAFTSMAN wet/dry vacs 5 gallon and larger. To ensure maximum performance of your wet or dry vac, replace this filter on a regular basis.