General description HEPA Filter for D Series Replacement Filters is designed to enhance air quality by filtering fine dust, pollen, and other allergens, ensuring cleaner air in your environment. Made of high-quality materials, this filter is essential for maintaining optimal performance of your device. Technical specifications Material: Plastic Package Contents: 8 HEPA filters 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 for best performance.