3M FF-400 Series Full Face Masks The most durable mask from 3M, designed for maximum comfort in extreme working conditions. The 3M FF-400 mask belongs to the second category of RPE and has a soft silicone nose cup and a large lens that provides excellent peripheral vision. The 3M FF-400 mask is the only mask with a unique Scotchgard coating that repels dirt, paint and other contaminants, making it easier to clean the lens. The 3M Cool Flow exhalation valve effectively removes heat and moisture, preventing lens fogging. 3M FF-400 series masks are equipped with a 3M Cool Flow exhalation valve, which helps reduce breathing resistance. The 3M Cool Flow valve is optimally located on the mask body in order to reduce the temperature and humidity created in the sub-mask space. This allows easy and comfortable breathing in the mask for long periods. ;
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