Moldex particulate filter with P3 protection and an additional charcoal protection layer for protection against ozone gas. P3 rated filters protect against harmful/carcinogenic dusts, water and oil based mists/aerosols, biological agents of risk group 2 and 3, CMR substances. The additional charcoal layer protects against ozone; an unstable toxic gas which has no colour but a pungent odour. Moldex particulate filters have pleated filter technology significantly reducing breathing resistance and fatigue, improving wearer comfort. These EasyLock® filters Moldex have created for the 7000 and 9000 series can be used two ways; simply connect the filter to the mask with a twist and lock system, alternatively you can utilise the mask for full effect and attach a particulate filter to a gas filter before attached it to the mask itself. This double filter makes the masks much more versatile as they can be used in many more environments. Certified and tested to EN143:200+A1:2006. Supplied 12 filters per box.