[Cleaning and Replacement] The pre-filter can be removed for separate cleaning. Use a soft brush to gently wipe off dust. To ensure optimal performance, replace the Vital 100 filter every 3 to 5 months. This air filter delivers efficient filtration with low energy consumption. HEPA H13 FILTRATION: Removes 99.9% of airborne particles such as allergens, odors, VOCs, smoke, pollen, pet dander, dust, smog, and other contaminants as small as 0.1 micrometers. Captures finer particles than HEPA H11 filters rated at 0.3 micrometers. [3-Stage Filtration] The Vital 100 replacement filter features a 3-stage system: (1) Washable and removable pre-filter, (2) High-efficiency activated carbon filter, (3) True H13 HEPA filter. Three layers work together to capture particles of various sizes and reduce household odors. Part # Vital-100-RF. Designed to be compatible with the Levoit Vital 100 air purifier. Rigorously tested for proper fit and performance. A great choice for improved air quality and a better breathing experience. Color: Black + White Material: Plastic Package Contents: 2 x HEPA Filter Note: Light reflection and display settings may cause slight color variations. Measurement tolerance: +/- 1–3 cm.