3M's P100 Particulate Filters are for use with 3M 6000 Series Full Face Respirators and 3M 7500 Series Half Face Respirators.
These respirator filters protect against a wide variety of airborne particulates, including asbestos, dust, fiberglass, welding, soldering, brazing, torch cutting, etc.
3M P100 Particulate Filters are sold two cartridges per package, and are also available in case lots of 50 packages of two filters.