Easy to remove and replace as part of routine maintenance.Filters maintain for Roomba's cleaning performance while reducing infiltration of dust, pollen and other allergens into the air you breathe.Suggestion: For best results, filters should be replaced every 2 - 3 months. For Roomba 800/900 Series HEPA filter substantially increases the amount of dust,pollen, pet dander and allergens captured by the innovative filter design.To keep for Roomba running at peak performance, the filter should be replaced every two months. Compatible for Roomba 800/900 Series 870 880 980Type: Vacuum Cleaner PartsVacuum Part Type: BrushesType: Vacuum Cleaner FilterFeature: Grade AAA Hape Accessory PartsQuantity: 12pcs/lot filter kits for roomba 800 & 900 seriesCompatible with: fits for iRobot Roomba 800 900 Series (870, 880,980 ) Vacuum Cleaning RobotsHow To Clean the Filter: 1.remove the bin by pressing the bin release button2.open the bin door to empty the bin3. now press and lift the filtered or release tab4 .remove the filter by grasping the yellow tab5.clean room was filter by tapping against your trash container6.to reinstall the filter, press the metal filter lever,with the side of filter and push the filter down,the filter door will not close if the filter is not installed correctlycolour: photo colorMaterial: plasticsize: 110*54mmPackage Contents: 4 x HEPA Filter for irobot roomba 800 series 870 880 9804 x individual extractors for irobot roomba 800 series 870 880 9804 x 3-armed side brushes for roomba 800 series 870 880 980Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.