The cartridge filter is designed to fit the ELECTROLUX bagless vacuum cleaner Cyclone Power ZSH 710, 720…722, 730, 732. The high grade of material used for ELECTROLUX filters provides your Cyclone Power with strong suction power and high filtration level as well as a maximum dust retention and high airflow. So your bagless vacuum cleaner motor is protected from dust particles inside the dust container. We recommend you to change filters at least twice a year or when they are visibly soiled. The use of non genuine ELECTROLUX filters may adversely affect your bagless vacuum cleaner performance. This pack contains one cartridge filter. Cartridge filter reference: EF 133.