Stanley Reusable HEPA Cartridge Filter, fits 7-18-Gallon wet or dry vacuum. (1-Pack per package). Job is easier when you have the right tools. Whether you are vacuumuuming your garage, workshop, or indoor floors, picking up liquids, cleaning your car, or cleaning up outdoors, there-Feet a Stanley accessory to make cleanup easier, quicker, and more efficient. Accessories are interchangeable with other major brand wet or dry vacuumuum equipment. Stanley wet or dry vacuumuums provide superior performance in any environment. Stanley vacuums make short work of even the toughest jobs, saving you time and effort. vacuum-the number one name in vacuum industry.