The DWALT HEPA Cartridge Filter is a washable and reusable clean collect cartridge filter that provides powerful particle filtration down to 0.3m. A patent-pending clean collect system means easy, secure, and quick installation and emptying without the mess seen elsewhere. Washable fine cartridge filter design that can be reused Perfect for collecting dirt, debris, sawdust, and more Collects particles of all kinds to 0.3m at 99.97% efficiency Patent-pending clean collect for easy installation and removal Suitable for wet debris, liquids, sawdust, wood chips, jobsite debris, car and truck dirt, concrete dust, ashes, pollen, allergens, and fine indoor particles