5-20 Gallon HEPA Cartridge Filter & Retainer

5-20 gallon, hepa cartridge filter & retainer, for vacuuming household debris, fine dusts & filtering allergens, mold spores & pollen, captures particles down to 0.3 micron in size, fits vacmaster wet/dry vacs 5 gallon to 20 gallon, fits most shop vac wet/