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

Perfect Compatibility: Our 45i filter replacement is compatible 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 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- service: 100 satisfaction guarantee. Any questions, you can contact us, we will try out best to give you a satisfactory solution