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 abek1 protection against organic boiling point 65c 43 inorganic gases vapours acid gases and ammonia plus p3 protection against harmful and carcinogenic dusts fumes and aeroso