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10 filters per box

NIOSH Approved Particulate Filter 5N11, N95 for 6000 Series RespiratorsApproved 95% effective against certain non-oil based particles.

This NIOSH approved pre-filter offers reliable protection against non-oil based particles, as well as dusts and mists. These pre-filters will work with any 3M chemical vapor cartridge. Must be used with 501 retainer Use with appropriate 3M organic vapor or other chemical cartridges Applicable for spray painting and most marine applications except welding and asbestos abatement 5N11 is not for use when oil-based liquid aerosols are present, as they will coat the media fibers; use 5P71 pre-filter when oil-based particles are present