Moldex easy lock filters for series 7000 9000 masks no need for additional clips or holders different gas and particulate filters can be combined easy lock particulate filters can either be connected to the easy lock gas cartridge or directly to the mask body adaptors or particulate pre filters are not necessary p3 r d for protection against harmful and carcinogenic dusts fumes and aerosols based on water and oil including radioactive particulates and airborne biological substances and enzy