<b>Pack of 4 Humidifier Replacement Filters - Great and affordable option for home humidification</b><br> <br> <b>Removes Minerals & Pollutants</b> - keep your humidifier clean<br> <b>Optimized Filter Design</b> - improves moisture output<br> <b>Reinforced Filter Material</b> - high efficiency and longer filter life<br> <br> <b>Replacement Filter for Honeywell HAC-504, HAC-504AW & HAC-501V1, Filter A</b><br> <br> <b>Fits Honeywell Humidifier Models:</b><br> <br> <b>HCM-300 Series:</b> HCM-300T, HCM-305T, HCM-305T-CST, HCM-310T, HCM-315T, HCM-350, HCM-350B, HCM-350B-CST, HCM-350W<br> <b>HCM-500 Series:</b> HCM-530, HCM-535, HCM-535-20, HCM-540, HCM-550, HCM-550-19, HCM-560, Environizer HCM-551, Environizer 63-1508<br> <b>HCM-600 Series:</b> HCM-630, HCM-631, HCM-632, HCM-632TG, HCM-635, HCM-640BW, HCM-645, HCM-646, HCM-650<br> <b>HCM-700 Series:</b> HCM-710<br> <b>HCM-1000 Series:</b> HCM-1000, HCM-1000C, HCM-1010<br> <b>HCM-2000 Series:</b> HCM-2000, HCM-2000C, HCM-2001, HCM-2002, HCM-2020, HCM-2050, HCM-2051, HCM-2052<br> <b>HEV-300 Series:</b> HEV-312, HEV-355<br> <br> <b>Also Fits:</b><br> Enviracaire Humidifier: ECM-250i<br> Kaz Humidifier: 3020<br> Robitussin Humidifier: DH-835<br> Vicks Humidifiers: V3100, V3500, V3600<br> <br> To maintain maximum filtering performance, filter should be replaced about every <b>1-2</b> months<br> (Depending on use and local water quality, or when performance starts to deteriorate.)<br> <br> <b>Order Now</b><br> Increases humidity levels during dry seasons and creates a comfortable home environment<br> <br> Truly worry-free 90 days warranty and friendly customer service..