3M  P100 Filter with 99.97% of filter efficiency offers protection against nuisance level organic vapors and particulates for concentrations up to 10 times and 50 times the permissible exposure limit with half Facepieces and full Facepieces respectively. Filter measuring 4.3" X 7" X 4.3" is compatible with 6000 series Facepieces or 7000 series Facepieces with bayonet filter holders. This filter is used in a variety of applications such as welding, brazing, torch cutting, metal pouring, soldering and exposure to lead, asbestos, cadmium, arsenic and MDA.