P3 R D + Ozone particulate filter. In addition to the particle filtering efficiency these filters also offer protection against ozone; at 1000ppb ozone a maximum use time of 8h.P3 protection against harmful and carcinogenic dusts, fumes and water/oil based mists/aerosols 20 x WELRevolutionary EasyLock filter system with no additional clips or holders. Different gas and particulate filters can be combined. EasyLock® particulate filters can either be connected to the EasyLock® gas cartridges or directly with the mask body.Any combination of filters possible, simply click together, there is no need for additional clips or filter holders. 1 BOX = 12 FILTERS (NOT PAIRS)
