STAGE 1 - Large Particle Pre-filter ?Removes particles easily seen by the naked eye (e.g. dust, hair and pet dander) STAGE 2 - Medium Particle Pre-filter ?Removes small to medium size particles (e.g. molds, spores and pollen) STAGE 3 - 6.5 lbs. of Activated Carbon/Zeolite Blend ?Removes chemicals, gases and odors (e.g. sulfuric acid and ammoni...
For optimum performance replace filter twice a season. Use to eliminate lime scale build-up on your tank and filter to insure longer trouble free performance for your humidifier.