1.The replacement filter compatible with Dyson V7 Animal, V7 HEPA, V8 Absolute vacuum cleaners. The HPEA post-filter is only available for Dyson V7 and V8 vacuum cleaners. Not suitable for V6 vacuum cleaners. Replaces part numbers 965661-01 and 967478-01. 2.High-efficiency premium HEPA pre- and post-filters to block fine particles, floating dust and most allergens, dust mites, pollen, etc. To ensure that your vacuum cleaner works properly and optimally. It is recommended to replace the filter once every 2-3 months or depending on usage. 3.Package Content: 2 x Dyson Filter, 2 x Dyson V8 Post Filter HEPA. 4.Washable and reusable pre-motor filter. Easy to replace, install and remove. Get back to having clean air to breathe again.