2x Post Filters, 2x Pre Filters.Total 4x FiltersProduct Description:Replacement Vacuum Filter for Dyson V6 Cordless Stick Vacuum,Replaces Part 965661-01 And 966741-01Pre-Filter SizeApproximately 48*25*170mm / Post-Filter SizeApproximately 70*76*42mmOnly For Dyson V6 Filter : This Products is only Replacement for Dyson V6.(NOT compatible with Dyson V7 V8 vacuum.Please check the corresponding model carefully in order to choose the correct model)Product Size:V6 filter for dyson Pre-Filter Size Approximately 48*25*170mm / Post-Filter SizeApproximately 70*76*42mm.Package List:1*PRE FILTER+1*HEPA POST-FILTERDaily Maintenance Recommendations:To ensure your vacuum works properly and optimally, it is recommend to replace the V6 filter every 2-3 months depending on your usage.Package Includes:2x Post Filters2x Pre filters