General description Replacement Parts HEPA Filter Compatible for IRobot Roomba S9 S9+ S9 Plus Robot Vacuum Cleaner Accessories are brand new and made of high-strength, environmentally friendly materials. These filters are designed to maintain the cleaning performance of your vacuum while reducing the penetration of dust, pollen, and other allergens into the air you breathe. Technical specifications Compatible with: IRobot Roomba S9, S9+, S9 Plus Material: Plastic Package Contents: 6 x Filter Elements, 1 x Cleaning Brush Measurement allowed error: +/- 1-3 cm Usage It is suggested to replace the filter every 1 to 2 months to ensure optimal performance. Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.