3M™ particulate filter, for use with: 6000, 7000, 7800 and FF-400 series respirators, acid gas, organic vapor, P100 filter class, 0.999 filter efficiency, bayonet connection, non-woven, resists: flame, water, oil and non-oil based particles, 4.3 x 4.3 in dimensions. Exceptional 99.97% filter efficiency meets NIOSH p100-series test criteria. Advanced electret media (AEM) provides light weight, easy-breathing comfort. Versatile protection against many oil and non-oil based particulate contaminants. Bayonet compatibility allows use with many 3M™ half and full facepiece reusable respirators. Provide respiratory protection against exposure to lead, asbestos, cadmium, arsenic and MDA. Helps protect against a wide range of oil and non-oil based particulate contaminants.