The 3M Particulate Filter P100 helps filter out harmful particles while you're sanding and scraping. For professional use only and used as a filter replacement option for 3M Reusable Respirators. Easy to install, these handy filters will have you back on the job in a flash. When your filter becomes dirty, damaged or difficult to breathe through, replace with the trusted protection of the 3M Particulate Filter P100 #2091. Contains 2 pair of filters and fits 3M 6000 series and 7500 series half and full face piece respirators. NIOSH approved: P100.