General description High-quality, precision-fit HEPA filter for Xiaomi SCG4021GL air purifiers. Removes 99.97% of small particles down to 0.3 microns, making it ideal for allergy sufferers. Enlarged surface area for thorough filtration of pollutants and odours, resulting in improved indoor air quality. Disposable filters should be replaced every 3 - 6 months. Technical specifications 3-stage filter system: pre-filter, HEPA filter, and activated carbon. Diameter: 20 cm Height: 29 cm Weight: 1055 g Colour: white / grey Replacement cycle: every 3 - 6 months Without RFID chip Compatibility and accessories Replacement for Xiaomi SCG4021GL air purifiers. Other information Content of delivery: 3x HEPA filter. The percentage filter change indicator of the air purifier is not supported by these filters. It is the user's responsibility to monitor the filter change interval. Cost-effective spare parts and accessories without compromising on quality.