1. Replacement filter is compatible with Dyson V7 Animal, V7 HEPA, V8 Absolute vacuums. The HPEA rear filter is only suitable for Dyson V7 and V8 vacuum cleaners. Not suitable for V6 vacuum cleaners. Service part numbers 965661-01 and 967478-01. 2. Premium HEPA pre-filter and post-filter, effectively blocking small particles, floating dust and most allergens, dust mites, pollen, etc. Make sure your vacuum cleaner is working the best way. It is recommended to replace the filter every 2-3 months or depending on usage. 3. Package includes: 2 x Dyson filter, 2 x Dyson V8 HEPA filter. 4. Cleanable and reusable filter before the engine. Easy to replace, install and disassemble. Come back for clean air and breathe again. 5. If you have any questions, do not hesitate to contact us.