BETTFILTER 6 Pack Demineralization Cartridge Filter for Humidifier Compatible with Dreo Humidifiers HM311/HM311S/HM524/HM524S/HM306/HM409S, Reduce Minerals, Filter Hard Water, Eliminate White Dust

COMPATIBLE HUMIDIFIER MODELS：This humidifier filter cartridge is compatible with Dreo models HM311, HM311S, HM524, HM524S, HM306, and HM409S(Model Numbers: DR-HHM001, DR-HHM001S, DR-HHM004, DR-HHM004S, DR-HHM006, and DR-HHM009S). Before purchasing, please confirm that your humidifier is one of the models listed above to avoid any incompatibility issues 3-LAYER CLEANING AND FILTRATION SYSTEM：The demineralization filter utilizes a three-layer filtration system and large-surface hydrogen resin, which increases the contact area with water, effectively removes heavy metals such as calcium and magnesium ions from the water, achieving high-efficiency purification ENJOY FRESHER AIR：Installing a demineralizing filter cartridge with your humidifier filters hard water, preventing limescale and white dust buildup. This ensures the mist released is pure and fine, delivering a healthy and comfortable breathing environment ENHANCE PERFORMANCE & EXTEND LIFESPAN：Using our humidifier filter cartridges reduces contaminants in water to protect your unit from internal buildup. This not only boosts humidifier performance and longevity but also delivers more comfortable humidification-a double benefit BUY WITH CONFIDENCE：Our humidifier filters are crafted from high-quality materials and deliver exceptional filtration performance. Each box contains 6 filters, offering great value. A single cartridge can purify up to 40 gallons of water (approximately one month, depending on water quality)