General description These 4 Pack Replacement Filters for Cordless Vacuum Cleaner are made of high-quality materials designed to filter fine dust, reducing dust, pollen, and other allergens from the air you breathe. Regular maintenance is essential for optimal performance. Technical specifications Material: Plastic Package Contents: 4 x HEPA filters, 1 x cleaning brush Measurement allowed error: +/- 1-3 cm Usage It is recommended to replace the filters every 2 to 3 months to maintain the vacuum cleaner's performance. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.