3M™ Particulate Respirator 8577, P95 The 8577 P95 particulate respirator features P-series filters and odor removing filter material for use in environments where nuisance levels of organic vapors are present. The 3M™ Cool Flow™ Exhalation Valve, advanced electret media, and M-nose helps provide a custom fit and secure seal. Foundry operations, lab settings, petrochemical processing, undercoating and agricultural applications are a few of the 8577 uses. Made in USA. Sold per box.