About This

• Compatible Models: Perfect compatibility with Blue Pure 311i Max air purifier, can be used as Replacement Part for # F3MAX.✖✖✖Not compatible with Blue Pure 311i+ max or 311 Auto！Please note that the ✖✖✖311i+ max and ✔✔✔311i Max look extremely similar, but they are two completely different models!They are completely different sizes too!Please check your model number carefully before purchasing.
• High Quality Material: Blue 311i Max replacement filter is made of high-quality non-woven activated carbon and can adsorb 99.99% of air particles (with a diameter as small as 0.03 micrometers), bringing a healthy environment to your family.
• 3-in-1 Efficient Filtration：Blue Pure 311i Max Filter adopts double-layer filtration technology, which absorbs pet plush、household waste, volatile organic compounds and smoke components through pre filters and carbon filters, providing fresh air for your family.
• Installation and Regular Replacement: Simply remove the packaging to replace the old Blue 311i filter without any tools. Recommended to regularly replace the Blue Pure 311 filter within 4-6 months to maintain The Freshness And Cleanliness Of The Machine.
• Customer Service: Including 2 cost-effective Blue Pure 311i Max filters, If you have any problems with the filter fitting your air purifier, please contact us through our Amazon home page, we will reply in 24 hours