General description 100% new and high quality HEPA filter made of composite materials. This filter effectively captures fine dust, pollen, and other allergens, improving the air quality in your home. Technical specifications Material: Composite materials Package Contents: 1 x HEPA filter Measurement allowed error: +/- 1-3 cm Installation Easy to remove and replace as part of normal maintenance. Usage It is recommended to replace the filter every 2 to 3 months to maintain optimal performance.