This N95 particulate prefilter works with the 3M™ Respirators. It can provide protection against contaminants up to 10 times the permissible exposure level (PEL) when used with half facepiece respirators, or up to 50 times the PEL when used with full facepiece respirators. It is approved for solid and liquid aerosols that do not contain oil. Two Prefilter Retainers (#74315) are required to hold it to the cartridge.
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