The twin filter cartridges for the force 10 full face mask and the force 8 half respiratory protection face mask it offers an assigned protection factor apf of 10x workplace exposure limit wel against fine dusts fibres fumes and liquid aerosols when attached to a force 8 when attached to a force 10 it offers an apf of 20x wel cost effective filters for protection against particulates with low profile angle for minimum visual impairment cartridges have an integral maintenance free dispo