Fangrui Product Details [compatible] For -300 Series: -300t, -305t, -310t, -315t, -350, -350b, -350w, -450bcst, -500 Series: -530, -535, -535-20, -540, -550, -550-19, -551, -560. -600 Series: -630, -631, -632, -632tg, -635, -640bw, -645, -646, -650, -700 Series: -710, -1000 Series: -1000, -1000c, -1010, -2000 Series: -2000c, -2001, -2002, -2020, -2050, -2051, Hcm2052, Hev-312, Hev-355 [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 . Colour:white Material:wood Pulp Paper Package C