General description The replacement front motor HEPA filter is designed specifically for Dyson Big Ball vacuum cleaners, including models CY22, CY23, CY24, CY25, CY26, CY27, CY28, DY75, DY77, and DY78. This premium filter features a two-in-one design that efficiently blocks fine particles and floating dust, ensuring optimal performance of your vacuum. Technical specifications Part Number: 967371-01 Material: High-efficiency filter material Compatibility and accessories Compatible with Dyson Big Ball models: CY22, CY23, CY24, CY25, CY26, CY27, CY28, DY75, DY77, DY78 Package includes: 2 pre-motor filters Installation Wash the filter with warm water and let it air dry completely before reusing. A mild detergent can be used if desired. Usage To maintain optimal performance, it is recommended to replace the filter every 4 to 6 months.