NIOSH approved against formaldehyde, certain organic vapors and particulates. Use with 3M Half and Full Facepieces 6000, 7000 and FF-400 Series with bayonet filter holders. This formaldehyde organic vapor cartridge/P100 filter can be used for a variety of applications, including laboratories, wood processing, carpet manufacturing, and primary metals manufacturing. Swept-back design offers enhanced comfort and visibility. 2 pack.