H11 Filter: It can effectively block dust and hair and prevent secondary pollution. The filter efficiency is 99.5%. Pleat Design: The pleat design can reduce wind resistance, make it smoother to filter, and can produce high-speed rotating airflow to remove dust. Removable and Washable Design: Removable from a filter kit, the washable design saves more consumption costs for compatibility with the Mi Jia car vacuum cleaner. Made of high-quality materials and durable. Easy to disassemble and replace during routine maintenance. The filter removes tiny dust and dust produced by bacteria and reduces secondary air pollution. For best results, filters should be replaced every 23 months. Color: Photo color Material: Plastic Size: 48 x 35 mm Package Contents: 4 x Filter 1 x Cleaning Brush Only the above package content, excluding other products. 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