Great Compatibility: WF2 humidifier filters replacement compatible with a wide range of Kaz, Honeywell, Caire, and Reem humidifiers. It fits Starry Night cool mist humidifier and vaporizer models: V3100, V3500, V3600, V3700, V3800, V3850, V3850JUV, V3900, V3900JUV, and the VEV400 series. It also fits 3020; SCM1118, SCM1119, SCM1120; HCM300T, HCM315T, HCM350, HCM350B, HCM630, HCM631, HCM645, HCM650, HCM1000, HCM2000, HCM540 series, and HCM710. Replace part WF2 PWF2.High Efficiency Performance: Our WF2 humidifier filter has excellent performance in improving air quality. It effectively removes minerals and pollutants from hard water to prevent white dust and retains essential mineral elements. While humidifying the air, it diffuses moisture to improve sleep quality, keep skin moisturized, prevent sore throats, and relieve 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. It uses advanced lower density structure technology, matching the original design with less pressure and maximum surface area for optimal moisture dispersion.Environmentally friendly material ensures optimal performance and delivers healthier, 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, make sure to soak it in water. This step ensures continuous moisture output.Material: Wood pulp paper Color: As shown Package Contents: 4 x Filter Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3 cm.