For breathing protection against solid and liquid particles, relief against nuisance-level organic vapours and acid gas, as well as protection against ozone up to 10 x OEL, use 3M™ Particulate Filters, 2128. They’re flexible enough to use across our range of reusable half and full-face masks, for safe working in hazardous environments. Our lightweight, P2 R filters combine protection with comfort. They offer low breathing resistance and good balance when connected to your mask, and their small size means they fit comfortably under welding shields. They can be clicked into place quickly and easily using the 3M™ Bayonet Filter Attachment System, and they can be used with any 3M™ Reusable Masks with a bayonet-style connection.