Fits:perfect air purifier: humidifier filter for the air purifier: HU4801 and HU4803, as well as for the 2000 series: HU4811, HU4813 and HU4814 Hight quality Super absorbent Healthy air Advanced humidification filter, and scale can be adsorbed Model Number:FY2401 or 30 Type:Humidifier Parts color:Black Material:filter cotton Package Contents: 2 x humidifier filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. 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.