2 Pack 45i Replacement Filter for Breathesmart Flex Bh400 45i Air Purifier H13 Grade True Hepa Fresh Filter B4-Pure / Fl40

Additional Details from the Manufacturer

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More features

• [Perfect Compatibility]: Our 45i filter replacementCompatible with Allen BreatheSmart Flex and 45i Air Purifier Only, Part # B4-Fresh (Old Part # FL40-Silver-Carbon).
• [Valuable Package]: Contains (2) 3-Stage H13 True HEPA filtration system including Pre-Filter, H13 Grade True HEPA Filter and Activated Carbon Filter, PLUS (6) extra replaceable Pre-Filters.
• [Superior Filtration Systems]: 3-in-1 True HEPA System High Efficiency Activated Carbon Filter, H13 Grade True HEPA Filter. Works 99.97% of airborne particles as small as 0.3 microns in size to attach, protecting your home from pet hair, pet dander and odors.
• [Easy Installation]: Easy to replace without tools.Any questions about the installation can contact us.Replace True HEPA Filter Set every 9-12 months and Pre-filter every 3 months for optimal performance.
• [After-sales service]: 100 satisfaction guarantee. Any questions, you can contact us, we will try out best to give you a satisfactory solution.