1. Compatible Models This replacement filter is suitable for all models of Rowenta ZR903701 Silent Powerful Cyclone Vacuum Cleaners, including RO7611EA, RO7623EA, RO7634EA, RO7647EA, RO7663EA, RO7676EA, and RO7681EA. 2. Value Pack It includes 2 exhaust filters and 2 pre - motor filters. We recommend replacing and cleaning the filters after 2 - 3 months of use. Frequent replacement or cleaning of the filters helps to extend the service life of the vacuum cleaner. 3. Washable and Reusable The pre - motor filter is washable, and the high - efficiency filter can be cleaned. If you find the filter dirty, you can take it out for cleaning to keep it clean and improve the filtering effect. (Ensure the filter is completely dry before use, which takes at least 24 hours.) 4. Excellent Filtering Performance Rowenta's filters are made of high - quality filtering materials, which can effectively filter and block dust. This helps us breathe clean and fresh air, adsorb odors, and protect our family from airborne particles. 5. Easy to Install No complex installation steps are required. You can easily install our accessories without using any tools. 6. To keep your vacuum cleaner running efficiently, please replace the accessories every 2 - 4 months.