4 Pack Washable H Pre-Filters Replacement Compatible with Dreame T10/T20/T30/V12S/V16S/G9/G10 Vacuum Cleaners Compatible with Xiaomi G9 G10. The pre-filter is made of high-efficiency filter material, which can effectively filter fine particles, floating dust, to prevent large dust particles from entering the motor, to ensure a long service life for Dyson vacuum cleaner. Made of high-quality materials, durable and easy to use. Easy to install and remove without extra effort and time. Wash with warm water and allow to air dry completely before reusing. To keep your vacuum cleaner working properly and optimally, it is recommended to replace the filter every 4 to 6 months. Package Content: 4 x Replacement Pre-Filters. Note: The data are all measured manually, please allow 1-3cm error, due to differences in light and display, there may be some color differences, please refer to the actual item received.