3M 2091CN Particulate Filter P100 2-Pack b25 3M 2091CN P100 particulate filters, 2-pack. Unused, no original tags. Compatible with 3M 6000, 7000, and FF-400 series half and full facepiece respirators. NIOSH approved under 42 CFR 84. Also rated GB2626-2006 KP100. Two filters included.