This genuine motor filter is specially designed to fit your AEG Ultra Captic vacuum cleaner. The high quality washable filter protects your vacuum cleaner motor from dust particles in the dust container. In order to maintain the brilliant performance of your cleaner, you can remove the filter and wash under running water when it becomes visibly soiled. Changing the filter on a regular basis will provide your cleaner with a high airflow and strong suction power. Using a genuine filter will ensure maximum dust pick up. Generic filters may adversely affect the performance of your vacuum cleaner. This pack contains one washable motor filter. AEG filter reference: AEF 137. You can find the Ultra Captic washable filter under the reference AEF 13W.