Fangrui Product Details Fangrui Product Details Fangrui Product Details [compatible] These Wf813 Humidifier Filters For Wf813; For Wf813,rcm-832, Rcm-832n; For Wf813, Rwf813, Pcwf813, Pccm-832n Pccm-840, Ac813; For Eqwf813, Eq-2119-ul; For Sh100 Sh200; For Duracraft Dh-830; For Dh-832, Acr-832, D13-c, Hc-832 [high Quality] The Humidifier Wick Filter Made Of The Highest Quality Materials, This Filter Wick Is Sturdy, Fine, And Multi Layer Mesh, Natural Hydrophilic Fabric Multi-layer Mesh Maximizes The Moisture Output Of Your Humidifier. [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 Take Off 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 Thoroug