DescriptionReduces pollutants from the water used in your humidifier to produce better air quality by maintaining humidity levels during dry seasons. Made by healthy wood material, praticle and easy to use.Feature-Color: As Shown. - Material: Paper. - Size: 20 x 13 x 2cm. - Made by pure natural wood material, healthy and no toxic. -Honeycomb filtration traps mineral pollutants found in water and helps prevent them from entering home. Antibacterial paper with flow-through technology provides maximum output of humidified air. Leaves no white, dusty residue. -Fit with: Honeywell HAC-504, Honeywell HAC-504AW,Honeywell 63-1508, Honeywell ECM250i,Honeywell DH835, Honeywell HCM-53x,Honeywell HCM-54x, Honeywell HCM-300T,Honeywell HCM-310T, Honeywell HCM-315T,Honeywell HCM-330T, Honeywell HCM-350,Honeywell HCM-530, Honeywell HCM-535,Honeywell HCM-535-20, Honeywell HCM-540,Honeywell HCM-550-19, Honeywell HCM-550,Honeywell HCM-551, Honeywell HCM-560,Honeywell HCM-630, Honeywell HCM-631,Honeywell HCM-632, Honeywell HCM-632TG, Honeywell HCM-635, Honeywell HCM-640BW,Honeywell HCM-645, Honeywell HCM-646,Honeywell HCM-650, Honeywell HCM-710,Honeywell HCM1000, Honeywell HCM1000C,Honeywell HCM1010, Honeywell HCM1010C,Honeywell HCM1020, Honeywell HCM2000,Honeywell HCM2000C, Honeywell HCM2001,Honeywell HCM2002, Honeywell HCM2020,Honeywell HCM2050. - Caution: Replace filter at least once per season (or more frequently in hard water conditions) to help prevent bacteria growth and maintain maximum efficiency.Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!