The Xiaomi Truclean W20 Wet Dry Vacuum Filter (2-Pack) is designed to maintain optimal performance and hygiene in your vacuum. Featuring a dual-layer filtration structure, it effectively removes large particles and foreign objects such as lint and debris, ensuring the suction fan operates normally and extending the vacuums lifespan. The filters are washable and recyclable, offering an eco-friendly solution for regular maintenance. For optimal filtration effectiveness, it is recommended to air dry the filter after each cleaning and replace the filter every 36 months.