Superior Filtration: These filter surfaces provide exceptional filtration and trap fine particles and debris to keep your pool water clean and clear. The combination of ABS and activated carbon filter cotton ensures effective removal of contaminants, improving overall water quality and creating a more enjoyable bathing experience. Regularly changing your filter surfaces will maintain optimal performance of your Dolphin robot cleaner. Perfect compatibility: Specially designed as spare parts for Dolphin robot cleaners, part number 9991422-R4, these filter surfaces guarantee a seamless fit and optimal functionality. You can be sure that these filters will work perfectly with your existing equipment, ensuring effective cleaning and maintaining the longevity of your pool cleaning system. Avoid generic filters and choose these for guaranteed compatibility. Easy to replace: Replacing the filter surfaces is a quick and easy process, allowing you to maintain your pool cleaner with minimal effort. Simply remove the old filters and insert the new ones. This user-friendly design ensures that you can spend less time on maintenance and more time enjoying your clean and sparkling pool. The simple design makes it easy for anyone to replace the filters. Specifications: Color: Grey Dimensions: Length: 29cm, Width: 14cm, Height: 2cm Material: ABS + Activated carbon filter cotton Model: 9991422-R4 Package includes: Filter surface x4