General description These 2 Pack Humidifier Wick Filters are designed to be compatible with HWF80 and HWF80-U models, as well as the HM2200 and Whole House Smart Humidifier model HCM3888C. They are made from high-quality filter cotton and should be replaced every 2 months depending on usage and environmental conditions. Technical specifications Material: Filter cotton Size: 42 x 24 cm Package contents: 2 Humidifier Wick Filters Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.