General description This 3 Pack Replacement Pre-Motor Filters for Dyson Big Ball vacuum cleaners is designed to enhance the performance of your device. Made from durable and environmentally friendly materials, these filters capture up to 99.9% of dust and dirt, ensuring a clean and fresh home environment. Technical specifications Replacement part number: 967371-01 Compatible models: Dyson Big Ball CY18, CY22, CY23, CY24, CY25, CY26, CY27, CY28, DY75, DY77, DY78, DC75, DC77, DC78 Usage To maintain optimal performance, clean the filter once a month and replace it every 2 to 3 months. The filter is washable and reusable; simply wash with warm water and let it air dry completely before reusing. Package Contents 3 x Pre-Motor HEPA Filters 1 x Cleaning Brush