The 3M™ Performance Particulate Filter P100 helps filter out particles while you're sanding and scraping on the job. These filters are for safe, professional use only and are to be used as a filter-replacement option for 3M™ Reusable Respirators. When your filters become dirty, damaged or difficult to breathe through, replace them with the easy-to-install 3M™ Performance Particulate Filter P100.