Features: Brand new and high quality Ensure your indoor environment stays free from harmful substances with this efficient Filters replacement, designed to remove dust and harmful substances like formaldehyde. Suitable for individuals sensitive to allergies or air pollution, as well as households, offices, schools, hospitals, and laboratories seeking quality air. Perfect for personal space like living rooms and bedrooms, or work environments such as offices and study areas where air is essential. Enjoy the convenience of easy installation, ensuring a continuous healthier lifestyle. Suitable for Mijia 4 air Purifiers Specifications: Material:ABS+Cotton Type:A/B/C/D Size:Approx.24.7x24.7x38.3cm/9.72x9.72x15inch Package Includes: 1x HEPA Filters note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.