honeywell Humidifier replacement filter HAC-506
2 filters per box.
Measures approximately 3 1/2" x 6 1/4" x 1 1/2".
Honeywell humidifier wick replacement filters.
Prevents surface growth and migration of mold, fungus, algae, and bacteria.
For optimum performance replace filter at the beginning of each season or every 2 months depending on use.