General description 100% brand new and high quality. Made of high-quality materials, this filter is more durable and effectively filters fine dust to prevent dust, pollen, and other allergens from entering the air you breathe. It is recommended to replace the spare parts every 2 to 3 months to maintain optimal performance. Technical specifications Material: Plastic Package Contents: 6x HEPA Filter Measurement allowed error: +/- 1-3 cm Installation Easy to remove and replace as part of normal maintenance.