【Compatible Model】Compatible with Dyson Big Ball CY18 CY22 CY23 CY24 CY25 CY26 CY27 CY28 DY75 DY77 DY78 DC75 DC77 DC78 vacuum cleaners. Replacement part number 967371-01. 【High Efficiency Filter】This replacement filter is made of durable and environmentally friendly materials to ensure the best performance of your vacuum cleaner. It captures up to 99.9% of dust and dirt and keeps your home clean and fresh. 【Efficient air purification】 The filter can filter ordinary air dust such as dander, hair and fine deposits, preventing air circulation in the air, creating a healthier home. 【Washable and reusable】 Wash with warm water and let it air dry completely before reusing it. Clean the filter once a month and replace it every 2 to 3 months to keep the interior of the vacuum cleaner dust-free. 【Package Contents】 3 x Pre-motor HEPA filters, 1 x cleaning brush.