BreatheSmart 45i & FLEX HEPA Filter45i / FLEX HEPA Filter · US · OEMVerified for US models only.Official manufacturer / OEMAlenBreatheSmart 45i & FLEX HEPA Filter↗Marketplace listingsAIRxAlen BreatheSmart 45i / FLEX replacement filter kit↗Aftermarket compatibility is stated by the seller or maker and is separate from Filter Fit evidence.Full part details →Open manufacturer source ↗Evidence A · AlenView evidence ↗