Side brush can go deep into the corners and edges to remove more dirt, dust and debrisThe filter can maintain the cleaning performance of the sweeper, while reducing the penetration of dust, pollen and other allergens into the air you breatheEasy to Assemble: This filter is inside the dirt tank. Remove the dirt bin by firmly grasping it and pulling it out, to empty the dirt bin, find the release latch and pull it to open and empty. Take out the old filter and then place the new filter back into the bin.Replacement Filter: A dirty filter will greatly reduce suction power. Depending on the vacuuming frequency and amount of dirt cleaned, for best performance, change the filter at least every 3 to 6 months.As part of normal maintenance, it can be easily removed and replacedName: Vacuum Cleaner AccessoriesModel:For Xiaomi Mijia B101CNVacuum Part Type: FiltersType: Vacuum Cleaner PartsApplication: Wooden Floor, Ceramic Tile, Marble, EtcApplicable Occasions: Living Room, Bedroom, Kitchen, Etccolor:As shownMaterial:plasticPackage Contents:1 x Main Brush4 x Side Brush4 x Filter/1 x Main Brush2 x Side Brush2 x Filter/1 x Main Brush6 x Side Brush6 x FilterOnly 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.