[Cleaning and Replacement] The pre-filter can be removed for cleaning separately. Use a brush to gently wipe away dust. For optimal performance, replace the filter every 3–5 months. HEPA H13 FILTRATION: Removes 99.9% of airborne particles including allergens, smoke, pollen, pet dander, dust, and other contaminants down to 0.1 micrometers in size. Captures finer particles than HEPA H11 (0.3 micrometers). [3-Stage Filtration] Includes: 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. Compatible with Levoit Vital 100 air purifier. Part Number: Vital-100-RF Color: Black + White Material: Plastic Package Contents: 2 × HEPA Filters Note: Color may vary slightly due to screen settings and lighting. Dimensions may vary by ±1–3 cm.