HAC-504 Premium Humidifier Wicking Filter Compatible with Honeywell HAC-504 HAC-504AW HAC504V1 Humidifier Replacement Filter A Replacement for Honeywell Filter HCM 350 & Cool Mist Humidifiers. (2QTY)

Package Includes 2 (two) Premium Replacement Humidifier Wicking Filters for Select Honweyll Humidifier Systems (Check Compatiable Models Below), Compatible with Models HCM300T (HCM-300T) HCM305T (HCM-305T) HCM305TCST (HCM-305T-CST) HCM310T (HCM-310T) HCM315T (HCM-315T) HCM350 (HCM-350) HCM350B (HCM-350B) HCM350BCST (HCM-450B-CST) HCM530 (HCM-530) HCM535 (HCM-535) HCM53520 (HCM-535-20) HCM540 (HCM-540) HCM550 (HCM-550) HCM55019 (HCM-550-19) HCM551 (HCM-551) HCM560 (HCM-560), Compatible with Models HCM630 (HCM-630) HCM631 (HCM-631) HCM632 (HCM-632) HCM632TG (HCM-632TG) HCM635 (HCM-635) HCM640BW (HCM-640BW) HCM645 (HCM-645) HCM646 (HCM-646) HCM710 (HCM-710) HCM1000 (HCM-1000) HCM1000C (HCM-1000C) HCM-1010 (HCM-1010) HCM2000 (HCM-2000) HCM2000C (HCM-2000C) HCM2001 (HCM-2001) HCM2002 (HCM-2002) HCM2020 (HCM-2020) HCM2050 (HCM-2050) HCM2051 (HCM-2051) HCM2052 (HCM-2052) HEV312 (HEV-312) HEV355 (HEV-355), Made from high-quality and durable material to maximize the moisture output of your humidifier. It captures mineral from hard water to stop white dust and features an outer layer of activated charcoal to fight odor., Should I flip my humidifier filter? Even with regular maintenance, you'll still need to replace the filter every three to six months no matter what. But an easy way to prolong a filter's life is to simply flip it around every time you change the distilled water.