45i Replacement Filter Compatible with Alen BreatheSmart Flex Bh400 & 45i Air Purifier, 3-in-1 45i HEPA Fresh Filter with Activated Carbon Pre-Filter, B4-Pure / Fl40, 1 Hepa Filter + 4 Carbon Filters

COMPATIBLE MODELSThe premium 45i pure replacement filter is compatible with Alen BreatheSmart 45i and Flex Air Purifier. Compared to Part # B4-Pure/B4-Fresh/FL40. NOTE: This is not a OEM product. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility. | 3-IN-1 FILTRATION Our 45i replacement filter for Alen BreatheSmart Flex and 45i air purifier features 3-stage filtration system: Fine Nylon Preliminary Filter HEPA Filter Activated Carbon Filter. It's specifically customized for pet dander and cooking odor, lint, pollen, smokers, wildfire season, gases, etc. | HIGH PERFORMANCEThese BreatheSmart Flex HEPA air filters for Alen BreatheSmart air purifier can attach 99.97% of pollen, pet dander, lint, dust, hair. And the activated carbon filter can attach most unpleasant odors such as pet odors, cooking, vocs, wildfire. | PREMIUM QUALITYOur BreatheSmart Flex and 45i air purifier replacement filter is adopt advanced lower energy consumption and lower density structure technology verified by the manufacturer, with higher efficiency and less pressure to ensure maximum performance. | COST-EFFECTIVE - Package includes 1 x Hepa +4 X Actived Carbon BreathSmart Flex and 45i replacement filter. It is recommended to replace your 45i filter every 6-8 months for optimal performance (depending upon your usage and environment). Filter made of FSC-Certified paper | MAINTENANCE TIPAfter installing a new 45i replacement filter, press the FILTER button for 5 seconds to reset your air purifier. The indicator will switch from red to green. For any setup or usage issues, you can reach us for prompt support.