General description Replacement active carbon filter designed for Xiaomi 1/2/2S/3/3H HEPA air purifiers. This filter effectively removes dust, PM2.5 particles, and bacteria, while also addressing formaldehyde, making it ideal for spaces with new decorations. Regular replacement of this filter helps maintain optimal cleaning performance of your air purifier. Technical specifications Type: Air Purifier Parts Version: Standard Edition Product Shape: 360 Degree Barrel Filter Recommended Area: 28m² - 49m² Color: Blue Material: Composite material Size: 200 x 290 mm Package Contents: 1 Air Purifier Filter Measurement allowed error: +/- 1-3 cm Usage It is recommended to replace the filter every six months to ensure the air purifier operates effectively.