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Compatible With: Honeywell HCM-600 Series HCM-630 HCM-631 HCM-632 HCM-635 HCM-645 HCM-646 HCM-650 QuietCare Humidifier. HQRP® Humidifier Wick Filter improves the efficiency of your humidifier by trapping mineral deposits from the water. This triple-layer humidifier filter helps control dust and dirt build-up and prevents impurities from spreading by passing air through the filter, also remove household odors. For optimum performance, humidifier filter should be replaced at the beginning of each season and then every 4-6 weeks, depending on usage and hardness of water.

HQRP Filter 3-pack for Honeywell HCM-600 Series HCM-630 HCM-631 HCM-632 HCM-635 HCM-645 HCM-646 HCM-650 QuietCare Humidifier + HQRP Coaster - B0162XGHDW