Mixzeny A200 Humidifier Filter with Activated Carbon Compatible with BONECO & AIR-O-Swiss Ultrasonic Humidifier, 4 Pack Gray

["【COMPATIBLE WITH】：A200 Hydro Cell compatible with all Boneco/Air-O-Swiss humidifiers except for the S450 Steam Humidifier and the 7146 Travel.","【PREMIUM FILTRATION】: The A200 Hydro Cell uses activated carbon technology to reduce the growth of odor-causing chemicals inside your humidifier and keep the inside of the tank fresh and clean. This helps you enjoy fresh, clean moisture day after day","【VALUE PACK】: Contains 3 packs. To ensure the highest water quality in your humidifier, be sure to replace your Hydro Cell every 1 to 2 months, depending on the hardness of your water. This helps you enjoy fresh, clean moisture day after day.","【EASY TO INSTALL】：Simply place the humidifier water filter inside the water tank of ultrasonic humidifier, screw the lid back on, and the A200 Hydro Cell immediately begins filtering out contaminants to keep the water hygienic and clean.","【CUSTOMER SERVICE 】: We value customer service and satisfaction. If you have any problems with the A200 filter fitting your ultrasonic humidifier, please contact us through our Amazon home page."]