Great Compatibility: WF2 humidifier filters replacement compatible with a wide range of Kaiz, Honeywell, Caire, and Rea humidifiers. It fits Starry Night cool mist humidifier and vaporizer models: V3100, V3500, V3600, V3700, V3800, V3850, V3850JUV, V3900, V3900JUV, and VEV400 series. It also fits 3020; SCM1118, SCM1119, SCM1120; HCM300T, HCM315T, HCM350, HCM350B, HCM630, HCM631, HCM645, HCM650, HCM1000, HCM2000, HCM540 series, and HCM710. Replacement part WF2 PWF2.High Efficiency Performance: Our WF2 humidifier filter delivers excellent performance in improving air quality. It effectively removes minerals and pollutants from hard water to prevent white dust, while retaining beneficial mineral elements. Helps diffuse moisture into the air, improving sleep quality, keeping skin moisturized, preventing sore throats, and relieving discomfort caused by dry environments.Superior Quality: This WF2 humidifier filter replacement features hot glue strips and a dense construction made from high-quality, environmentally friendly filter paper. Utilizes advanced lower density structure technology for optimal airflow and maximum surface area to efficiently release moisture back into the air. Designed to perform like the original for reliable results.Environmentally friendly materials ensure optimal performance, delivering healthier and more comfortable air.Pack: The package includes 4 x WF2 humidifier filter replacements. It is recommended to clean monthly and replace the filters every 2 months depending on usage and water hardness for best performance. Warm tip: Before using the WF2 wicking filter, soak it in water. This ensures continuous moisture output.Material: Wood pulp paper Color: As shown Package Contents: 4 x Filter Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.