Special Offer Mbetter 4 Pack 311 Replacement Pre-Filter for Blueair Blue Pure 311 Auto HEPASilent 23dB Air Purifier, Washable Fabric Protective Cover, Traps Pollen Dust, Pet Hair

✅【Quality fabrics】: 311 replacement pre-filter is made of high quality simulation linen and nylon material. No color fading, no shrinkage, and you can hide your power cord
✅【Air purifier protection】: 311 pre-filter is air purifier protector that effectively removes larger particles, hair, pollen, dust and pet stripping, extending the life of the filter
✅【Easy to use】: Washable pre-filters for Blueair Blue Pure 311 Air Purifier, detachable, washable and reusable, we recommend that you clean a pre-filter for 2-3 weeks to maintain strong filtration effect
✅【Home decoration】: Package contains 4 colors, including Advanced Gray, Dark Pink, Sky Blue, Night Green.You can use replacement pre-filters of the right color for different environments
✅【Warranty】: If you have any questions about our products, please feel free to contact us, we will definitely give you a satisfactory answer within 24 hours!