Core 300 Series Original FilterCore 300-RF · US · OEMVerified for US models only.Official manufacturer / OEMLevoitCore 300 Series Original Filter↗Aftermarket listingsFilter-MonsterReplacement Filter for Levoit Core 300/300S↗NispiraCore 300 / P350 3-in-1 replacement filter, 2-pack↗Aftermarket compatibility is stated by the seller or maker and is separate from Filter Fit evidence.Full part details →Open manufacturer source ↗Evidence A · LevoitView evidence ↗