Includes 2 filters

PERFECT COMPATIBILITY -- Our Core 400S replacement filter is compatible with LEVOIT Core 400S Smart WiFi Air Purifi-er. Compared to Part #Core 400S -RF. Please check your model before making an order

3-STAGE FILTRATION -- Our Core 400S replacement filter for levoit is designed in HEPA Filter, high-efficiency activated carbon, and fine Nylon Pre-Filter that work together for airborne particles and unwanted odors in your living space for improved air quality, ideal for pet owners, smokers, and people who live in cities