Paxanpax PFC344 Compatible Dyson Post-Motor Filter. Fits V7, V8, SV10 Series of vacuum cleaners. Paxanpax product code : PFC344. Equivalent commercial reference : 967478-01. Replace your pre and post filters regularly, it can reduce infiltration of dust, pollen and other allergens into the air you breathe, replace every six months for optimal use. Simple, effective, easy to use and clean.