This original filter cartridge is washable and specifically designed for ELECTROLUX bagless vacuum cleaners. The high quality of the material used in ELECTROLUX filters ensures that the vacuum cleaner has a strong airflow, which provides high absorbency and high filtration level for maximum dust collection. This protects the vacuum cleaner motor from the dust particles in the container. All filters should be replaced at least twice a year for the best possible performance. Using filters other than electrolux original filters may adversely affect the operation of the vacuum cleaner. This pack contains a washable filter cartridge. Check compatibility before purchase. This is suitable for Accelerator ZAC 6705-6790, ZAC 6805-6890, Cycloniclite Z 7108-7120, Energica ZS 203-205, Ergobox XXL TT11, 12, 14, Ergoeasy ZTI 7610-7690, Ergospace XXL Box. Reference number for electrolux is EF75B.