Features:

• Toxic Dust Respirator long-life cartridges are approved to the NIOSH (National Institute for Occupational Safety and Health) 42 CFR 84 respirator certification regulations, under the P100 Class, so they are at least 99.97% efficient against oil- and non-oil based contaminants and are oil-proof so they have no time use limitation
• These P100 cartridges feature rear-entry air flow that helps keep debris out of filter and makes respirator fit checking easier
• These cartridges are low-profile for improved field of vision