Description: Hepa filter dust box fits Xiaomi vacuum cleaner stone robot. Filtration of fine dust generated during cleaning to reduce secondary air pollution. Dustproof,reduce dust damage to sensitive parts of the machine. The filter effect of Hepa can filter particles such as cigarette smoke particles, pollen, dust, etc. It can be reused repeatedly after repeated cleaning. Specification: Material:Plastic,Hepa Size:Approx.25x10x5cm/9.84x3.94x1.97inches Package Includes: 1 Piece Hepa Filter 1 Piece Dust Box