Fangrui Product Details Fangrui Product Details Fangrui Product Details [compatible] Hft600 Humidizer Wick Filter, Applicable To Hft600t, Hft600pdq And T-type Filters. For Hft600 Series And Hev-600 Series: Hev615, Hev615b, Hev615 W, Hev620, Hev620b, Hev6 20w, Hev6 15, Hev-615b, Hev-610w, Hev-620b, Hev 620w [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 Thoroughly Throughout Your Home. [