Package includes 10pcs 65x50x20mm filters, ideal replacement for your old one. Compatible with Roomba e and i series robot vacuum cleaners. The filters maintain the cleaning performance of the vacuum cleaners, reducing infiltration into your breath. Replace the accessories regularly to keep your robot vacuum cleaner at peak performance and maintain a cleaner home environment. It is recommended to replace the parts every 2-3 months or according to your usage. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.