HUMIDIFIER REPLACEMENT FILTER: Filter A works with evaporative Honeywell humidifiers in the HCM-350, HEV355, HCM-710 and HCM-315/HEV312 model series. Captures minerals in the water in your humidifier and helps reduce white dust..HONEYWELL FILTERS: Honeywell replacement wicking filters use a patented design that helps inhibit 1.99% of growth and migration of particles on the filter. A blue pre-filter layer helps capture large particles..HONEYWELL HUMIDIFIERS: Humidity levels in your home between 40-60% can make the air feel warmer and improve your breathing comfort, sleeping, nasal congestion and dry skin. Dry air can cause static electricity, damage wooden furniture and irritate issues.HUMIDIFIERS FOR BABIES, , ADULTS: Humidifiers diffuse moisture into the air, and many find that a humidifier for the home, bedroom or nursery becomes an essential part of a good night's sleep when the air is dry or when sick.HONEYWELL : Improve your air and neutralize odors for a clean and y breathing experience year round with Honeywell replacement filters for air cleaners, purifiers and humidifiers. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.