Genuine filter for Electrolux Ultra Power ZB 5010, 5011, 5012. This Ultra Power filter is easy to clean and resistant. However, if it is broken, you need to change it in order to provide your cleaner a strong airflow and high suction power. Here are a few tips to best maintain your new Ultra Power filter: Dry clean it with a brush each time you empty the dust container. Wash it every 5th emptying of the dust container. To do this: Rinse the filter parts carefully under lukewarm water without using any detergents. Shake to remove excess water and leave to dry for a minimum of 12h. Make sure the filter parts are completely dry before putting them back into the cleaner. This pack contains one Ultra Power filter kit. Electrolux filter reference known as EF142.