The Honeywell HAC-504 Replacement Wicking Filter is an ideal replacement for natural cool moisture humidifiers and will greatly assist in the removal of minerals and pollutants from water. Honeywell replacement filters are designed specifically for Honeywell humidifiers to optimize performance and output capture minerals to help prevent white dust and over humidification. The Protec antimicrobial treatment helps prevent the growth and migration of mold, fungus, algae and bacteria on the filter. Featuring an optimized filter design, the Honeywell HAC-504 allows for the maximum in moisture output! Features: Designed exclusively to fit Honeywell humidifier models HEV-312C, HEV355C, HCM-300T, HCM-315T, HCM-350 & HCM-710C. Certified Honeywell HAC504PFC Humidifier Replacement Wicking Filter (Filter A) helps capture minerals and pollutants from the water and prevent white dust. NEW blue pre-filter layer helps capture large particles and provides additional structural support. Reinforced for maximum efficiency and longer filter life. Protect Treated Filter helps prevent the growth and migration of mould, fungus, algae, and other bacteria on the filter. Inhibits up to 99. 99% of mould growth (on the filter). For best performance, replace your filter with genuine certified Honeywell Replacement Wicking Filters if it has been 1 - 2 months, or the filter is hard and crusty, or it develops an odour, or moisture output is decreased.

Replacement Filter for Honeywell Natural Cool Moisture Humidifiers. Fits models: HCM-1000 Series; HCM-2000 Series; HCM-500 Series; ECM-250i, HCM-600 Series and the new HCM-300T and HCM-310T