Fangrui Product Details [compatible] For Hev-680b, Hev-680w, -6009, -6011i, -6011ww, -6012i, -6013i, -14v1, -14, -14n, Hm-3500 Series, Scm-3500 Series, Compatible With -14v1, -14, -14n. [easy Installation] We Advise You To Fill The Humidifier Tank With Distilled Water Instead Of Hard Water. Easy To , 1. Open The Humidifier Cover And The Old Wicking Pad; 2. Put The New Humidifier Wick Filter In Its Old Position; 3. Install The Cover To Complete The . [high Performance] For Performance, It Is Recommended To Repalce The Humidifier Pads Every 2-3 Months, Depending On Usage And Water Hardness, It Captures Mineral From Hard Water And Distribute Moisture More Evenly And Thoroughly Throughout Your Home. [humidifier Pads Refill] Content-humidifier Filter . Material: Wood Pulp Paper Colour: White Package Contents: 4 X Humidifier Filters Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item