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Filter will last up to 90 days depending upon usage and water quality.
Receive (2) Filters.
Demineralization Filters work with most Air Innovations Humidifier models: MH-408,MH-505, MH-509, MH-512, MH-513, MH-602, MH-701, MH-701b, MH-701c, and the MH-801, MH-801b.
These filters are not compatible with model MH-901 humidifiers.
Air Innovations Demineralization Filters (2-pack)
Air Innovations Demineralization Filters (2-pack) - B01HC2PCNI