This Emerson WF1 humidifier filter is made with an antimicrobial agent that helps prevent the growth of bacteria, mold, and algae on the humidifier filter, preventing them from being released into the air. The HDF-1 humidifier replacement filter features a honeycomb filtration system that traps mineral contaminants in your humidifier's water.
Approximately 5-1/4" x 24" x 1"
Fits Emerson Models: HD200, HD300, HD400, HD1021
Kaz: 3000, 3300, 3400, WF1
Other Manufacturer numbers: K01, UFK01, UKAZWF1P, DH1053