Photo 1 of 45i Replacement Filter Compatible with Alen BreatheSmart Flex and 45i Pure Air Purifier, 3-in-1 HEPA Filter with Activated Carbon Pre-Filter, B4-Pure, 1 Hepa Filter + 4 Carbon Filters

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Photo 1 of 45i Replacement Filter Compatible with Alen BreatheSmart Flex and 45i Pure Air Purifier, 3-in-1 HEPA Filter with Activated Carbon Pre-Filter, B4-Pure, 1 Hepa Filter + 4 Carbon Filters