Compatible Model: This air purifier filter replacement is suitable for the KJ420F-A35 air purification. Please check your model carefully before purchasing to avoid ordering the wrong model High-Efficiency Filtration: Our filter replacement features a precise mesh to effectively capture impurities, minerals, abnormal colors, and unpleasant smells in the water. It can also deeply improve the water quality for clean humidified air Premium Material: This air purifier replacement features a sponge that has great resilience and support, keeping the mesh upright for a long time. Its high absorb-and-hold capacity delivers steady, balanced humidity output, relieving dryness in the air Sustainable Reusability: Our air purifier replacement filter is washable & reusable, no frequent replacement