Moldex easylock 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 adapters or particulate pre filters are not necessary a1b1e1k1p3 r d protection against organic inorganic gases and vapours acid gases and ammonia boiling point 65c plus protection against harmful and carcinogenic dusts fumes