- Perfect Compatibility: Our Core 400S replacement filter is specifically designed for the LEVOIT Core 400S Smart WiFi Air Purifier. Ensure proper fit by confirming your model number matches Part #Core 400S-RF before purchasing. - High-Quality Construction: Made from durable materials including metal mesh, activated carbon particles, and plastic mesh, our filter effectively captures airborne particles and neutralizes unwanted odors. The combination of high-efficiency activated carbon and a fine Nylon Pre-Filter significantly improves your indoor air quality. - Effortless Installation: Installing our Core 400S filter is a breeze—no tools are required. Each package includes one filter for your convenience. - Maintenance Reminder: To maintain optimal performance of your LEVOIT Core 400S, it is recommended to replace the Core 400S-RF filter every 6-8 months. Use Scenarios: 1. Home Environment: Perfect for living rooms and bedrooms, the filter helps eliminate allergens like dust and pet dander, ensuring cleaner air for you and your family. 2. Office Spaces: Enhance your workspace by reducing smoke, odors, and other pollutants, promoting a healthier and more productive environment. 3. Allergy Relief: Essential for individuals sensitive to allergens, the Core 400S filter provides relief during peak allergy seasons by filtering out pollen and other irritants. Choose our Core 400S replacement filter for a reliable solution to enhance your indoor air quality.