Helps prevent stubborn mineral buildup on the heating plate which can decrease the performance of your humidifier.
For use in Warm Mist Humidifiers that use 3-1/4" pads.
Honeywell QuickSteam: HWM-330, HWM-331, HWM-335 and HWM-450, HWM330, HWM331, HWM335 and HWM450
Slant/Fin: All Slant-Fin Germ-Free humidifier models that use 3-1/4" pads.