[HEPA Filter]Made of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer. The filter can maintain the cleaning performance of the sweeper, while reducing the penetration of dust, and others into the air you breathe. Fine preliminary Filter traps larger particles in the air like dust, hairs, pet fur, lint and more It is recommended that you replace spare parts every 2 to 3 months depending on the frequency of use to keep the machine running at its best performance Easy to replace and disposable, no tools required. replace filters every 6 months for optimal performance. As part of normal maintenance, it can be easily removed and replaced Applicable Models Compatible For Dreame T10 Compatible For Dreame T20, T20 Pro Compatible For Dreame T30, T30 Neo Compatible For Dreame R10, R10 Pro Compatible For Dreame R20 Compatible For Xiaomi G9 G10 Colour:White & Gray Material:plastic Package Contents: 4 * Filter 1 * Cleaning Brush Only the above package content, other products are not included. Note: Light reflection 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.