COMPATIBLE MODELS :The 1043 wick humidifier filter highly fits for aircare, bemis, essick humidifier compatible models: EP9500, EP9R500, EP9800, EP9R800, EP9700, EP9R700, 826000, 826800, 831000, SS390DWHT, 821000, 821001 and others. To make sure a pleasant buying, you’d better check this 1043 humidifier filter in size, model & product number COST-EFFECTIVE PACKAGE :Including 4 pc 1043 wick humidifier filters. filter size: 11.7in * 11.0in * 4.0in. To ensure your humidifier works properly and optimally, it is recommended to replace your filters every 2-3 months, depends on the usage HIGH QUALITY : This upgraded 1043 super humidifier wick filter is made of premium and environmentally friendly materials, which will not spoil after long-term use and will not produce any odor. It matches the original standard and does not cut corners MULTIPLE WATER PURIFICATION :This 1043 wick humidifier filter has multiple water purification function, effectively adsorbing impurities in water, maximizing the release of clean water mist (micron-sized water mist), to create a comfortable and clean environment for your family CONTACT US : Improvedhand always value the shopping experience of buyers and are always ready to solve various problems for you. If you have any questions, please feel free to contact us at any time Improvedhand 1043 Super Humidifier Wick Filter Replacement for Aircare Bemis Essick Compatible with 821000 826000 826600 826800 826900 831000 EP9 EP9R EP9500 EP9700 EP9800, Pack of 4