- 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.A simple cleaning can restore its air purification performance (Note: Don’t use a high-pressure water gun to avoid structural damage)
- Easy Replacement: The air filter replacement will gradually turn yellow during use (normal phenomenon). Replace it after 6-12 months or immediately if severely yellowed. The replacement is simple—no extra tools needed, and one person can finish quickly
- Item Model Number
- KJ420F-A350 Humidifying Filter
- Main Function
- Humidifies Air
- HEPA Rating
- No HEPA
- Number of Layers
- 1 Layer (Sponge)
- Color
- Blue
- Material
- Sponge
- Net Weight
- 0.18 lbs/0.08 kg
- Product Dimensions
- 9.06 x 4.72 x 1.14 in/230 x 120 x 29 mm
Precision Fit Air Purifier Reusable Filter Geometry for Secure Internal Placement
The exact geometry of this air purifier reusable filter slot helps ensure it fits correctly and that airflow remains steady while it runs. The structure and size match the original filter, helping ensure it is installed correctly and that airflow remains straight while it runs. Checking whether the model is compatible before installing helps keep the filter running smoothly and prevents it from being fitted incorrectly.
Compatible filters allow the unit to fit tightly inside, ensuring even distribution of air and moisture while in use. The filter helps the air cleaner work as it should by ensuring it fits the right model and does not impede airflow. Using it every day inside ensures consistent humidifying performance.
Precision Cut Mesh Structure for Impurity and Mineral Capture During Humidifying
The air purifier reusable filter has a precise mesh structure designed to capture impurities in the water before moisture is released into the air. This mesh helps catch minerals and unwanted residues, allowing clean, humid air to move while it works. The mesh structure filters out unwanted particles while allowing water to flow evenly.
The mesh supports regulated humidification without clogging because it maintains consistent filtration across its surface. This design helps ensure that the moisture released into the air is cleaner and more evenly distributed, making the indoor environment more comfortable. During operation, the fine mesh continues to work without impeding airflow.
Single Layer Sponge Filtration Medium for Structural Support and Moisture Retention
The single layer sponge structure gives this air purifier filter its flexibility and structural support. During use, the sponge material helps keep the mesh straight, preventing it from falling over or changing shape as it absorbs water. Its absorb-and-hold capacity allows continuous moisture release during operation.
The filter maintains a consistent humidity level while working by evenly distributing water across the sponge layer. This helps make inner spaces less dry without causing sudden changes in air moisture. For daily humidification needs, the sponge structure continues to work well even after long-term use.
Washable Air Purifier Reusable Filter Design Supporting Repeated Cleaning Cycles
Because the air purifier’s reusable filter is washable, users can keep it working again by cleaning it regularly rather than replacing it often. It helps maintain high airflow and humidity by removing dirt and grime thathas built up on the sponge and mesh. This lets you use it for a long time without having to change the filter.
Cleaning the filter is all it takes to get it running again while keeping its shape. When you clean, avoid using high-pressure water, as it can damage surfaces. This design can be used more than once, keeping the air inside humid while reducing the number of replacements.
Water Based Humidifying Filter Configuration for Controlled Moisture Release
Instead of filtering out particles, this filter’s main job is to help keep the air moist. It helps bring in clean, wet air, helping keep the room’s moisture level stable. This ability helps keep you comfortable when it is dry outside or during dry or uncomfortable weather conditions.
The filter can be used year-round to maintain a stable indoor humidity level. It helps reduce discomfort from dry indoor environments by continuously adding moisture to the air. For everyday use in homes and businesses, it is ideal.
Tool Free Replacement Structure with Visual Yellowing Indicator for Maintenance Timing
You do not need any tools to easily change the air purifier’s reusable filter. Users can manually remove the old filter and replace it with the new one, making cleaning quick and easy. This design makes maintenance easy during regular replacement rounds.
Over time, the filter will gradually turn yellow, a normal sign of use. We suggest replacing the filter every 6 to 12 months, or sooner if it gets very dirty. This visible change helps users figure out when something needs to be replaced to maintain proper performance.
0.18 lb Lightweight Filter Mass for Balanced Airflow and Low Operating Resistance
The filter is very light—it only weighs 0.18 pounds (0.08 kg)—so air can flow smoothly through the air cleaner. Because it is light, the unit does not have to work as hard, and the moisture release is even. This makes the process smooth and stable over long periods.
The blue sponge material maintains even airflow and enhances humidification. Because it is not heavy, air can move through the filter evenly, which helps keep performance steady without adding extra resistance. The design supports continued use indoors without affecting the system’s stability.
9.06 × 4.72 × 1.14 in Compact Cartridge Dimensions for Indoor Room and Office Use
The filter is only 9.06 × 4.72 × 1.14 inches (230 × 120 × 29 mm), so it can fit snugly inside a suitable purifier. Its size makes it useful in living rooms, restaurants, studios, offices, and other rooms.
The filter’s compact design makes it suitable for both private and public settings. Allowing controlled humidification in enclosed spaces helps keep the indoor environment comfortable for daily tasks. All of these factors make it perfect for many indoor uses.








































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