Moldex EasyLock� Filters for Series 7000 9000 masks. No need for additional clips or holders. Different gas and particulate filters can be combined. EasyLock� particulate filters can either be connected to the EasyLock� gas cartridge or directly to the mask body. Adaptors or particulate pre-filters are not necessary. P3 R D for protection against harmful and toxic dusts, fumes andaerosols based on water and oil. 20 x Workplace Exposure Limit (Half Mask). 40 x Workplace Exposure Limit (Full Face Mask). Tested and certified to EN 143:2000+A1:2006.