- Perfect Compatibility: The Core 400S replacement filter is specifically designed for the LEVOIT Core 400S Smart WiFi Air Purifier. Ensure you verify your model before purchasing to guarantee compatibility with Part #Core 400S-RF. - High Quality Construction: This replacement filter features a robust design made from metal mesh, activated carbon particles, and plastic mesh. Its high-efficiency activated carbon and fine Nylon pre-filter work in tandem to capture airborne particles and neutralize unwanted odors, significantly enhancing your indoor air quality. - Easy Installation: Installing the Core 400S filter is a straightforward process that requires no tools. Each package includes one filter, making it simple to maintain optimal performance. - Maintenance Reminder: To ensure your LEVOIT Core 400S operates at peak efficiency, it is recommended to replace the Core 400S-RF filter every 6 to 8 months. Use Scenarios: 1. Ideal for households with pets, the filter effectively reduces pet dander and odors, creating a fresher living environment. 2. Perfect for allergy sufferers, it captures dust, pollen, and other allergens, providing cleaner air for easier breathing. 3. Suitable for use in offices or workspaces, it helps eliminate lingering smells and maintains a pleasant atmosphere for productivity.