1、Simple installation method, it is easy to replace and use, made of high quality materials, durable and sturdy, has a long service life. 2、Using high strength environmental protection materials, it can reduce the occurrence of dust, pollen and other allergens entering the air you breathe, with high efficiency and strong water absorption and good cleaning performance. 3、Washable design, it can be reused, easy to clean, in order to get the best results, the filter should be replaced every 2‑3 months. 4、High adaptability, it can be perfectly adapted to the corresponding replacement location, you only need to remove the original accessories and find a suitable location to install it. 5、High quality filters help improve the performance of the sweeping robot and prolong the service life of the machine. 3 x Filter Element Item Type: Filter ElementWeight: Approx. 72g / 2.5ozMaterial: ABSProduct Compatibility: It is suitable for 500 series and 600 series, such as for Roomba pet version 528 536 551 552 564 580 595620 630 650 and other sweepers.Product Size: Approx. 12.3x8x 4.6cm / 4.8x 3.1x 1.8in