General description Brand new and high quality replacement HEPA filters compatible with I7, I7+, I3, I3+, E5, E6, and E7 Robot Vacuum Cleaners. Made of high-strength, environmentally friendly materials, these filters help maintain the cleaning performance of your vacuum while reducing the penetration of dust, pollen, and other allergens into the air you breathe. Technical specifications Material: Plastic Package Contents: 24 x Filter Elements, 2 x Cleaning Brush Measurement allowed error: +/- 1-3 cm Usage It is recommended to replace the filters every 1 to 2 months for optimal performance. Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.