This full set of 4 replacement filters for the Dreval HEPA and UV Air Purifier, Humidifier, and Ionizer includes 2 double-sided filters that consist of: 1 HEPA filter, 1 Activated Carbon Filter, 1 Antibacterial and Antiviral Non-woven Fabric Filter, and 1 Cold Catalyst Filter. Filters should be replaced approximately every 12 months, depending on usage and air quality.
Trustpilot
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