[] :The newly upgraded WF2 humidifier filter uses a high -quality enhanced mesh structure, which can perfectly filter the hardness minerals in the water and prevent white powder from entering the indoor air. [PERFECT COMPATIBILITY]:WF2 humidifier filter Fit for 3000 Series: V3100, V3500, V3500N, V3600, V3700, V3800, V3850, V3850JUV, V3900, VEV320; Fit for Hone-ywell HCM630, HCM631, HCM645, HCM650, HCM300T, HCM350, HCM1000, HCM2000, HCM540 Series;SCM1118, SCM1119, SCM1120 [HIGH EFFICIENCY FILTER]: High -quality and cheap WF2 Humidifier Filters can help you change the filter more frequently. The upgraded honeycomb carbon filter is designed for larger surface area absorption and other filters. Use advanced technology to the maximum absorption of moisture and better water to improve efficiency, thereby helping you have a and pleasant comfort environment. [REPLACE FILTER REGULARLY]: For better results, it is recommended that you only fill the humidifier tank with distilled water and replace the wick every 2 to 3 months. Regular replacement keeps your air environment clean and maximizes the life of your humidifier. Let you enjoy a healthier and happier life. Material: Filter cotton colour: white Package Contents: 3 x humidifier filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.