[Perfect Fit]HDC311 super wick humidifier filter is specifically designed to fit for Essick Air AIRCARE HDC311 Humidifier Models EA1201 and EA1208 water wick series air humidifier. [Excellent Craft]- The premium HDC311 humidifier super wick filter with the hot glue strips and dense construction is made from high-quality reinforced mesh paper and adopts advanced lower density structure technology verified by the manufacturer, identical to the, with higher efficiency, less pressure and the best quality to have the most surface area to displace moisture back into air as you expect. [Absorption & Maxium Output]Humidifier wick filter is a crucial item that allows the humidifier to make the air reach the standard. Our HDC311 super wick humidifier filter does a very good job of filtering out the hardness minerals in the water meet the demand of your daily life. [Easy to Install]HDC311 super wick filter fill humidifier tank with distilled water. We recommend you to replace the filter every 1-3 months for optimal performance (depending upon your usage). It is fairly easy to install the HDC311 humidifier filter, no tools required, just cost you few minutes. [Product size] 26.00 x 18.00 x 16.00 cm [Compatible models] fits for AIRCARE Essick Air HDC311 EA1201 EA1208 Colour:White Material:Plastic Package Contents: 3x humidifier filter