- ULTRA FINE REPLACEMENT FILTER SET: Upgrade your Dolphin robot pool cleaner with this complete set of 4 ultra-fine filter panels. Designed specifically for compatibility with Active 20, Active 30, and various other models, these filters ensure a perfect fit in your cleaner's basket, enhancing its cleaning efficiency. - EXCELLENT FILTRATION CAPABILITY: These filters effectively capture fine dirt, sand, and leaves, ensuring your pool water remains crystal clear. The ultra-fine mesh design traps even the tiniest particles, minimizing the need for additional treatments and reducing maintenance time. - EASY CLEANING AND MAINTENANCE: Cleaning is effortless—just remove the filter plates and rinse them with a garden hose to remove trapped debris. Their washable design allows for easy upkeep, enabling you to reuse them throughout the swimming season without sacrificing filtration quality. - USER-FRIENDLY INSTALLATION: Each filter plate is numbered for straightforward installation in your cleaning basket. Simply follow the numbers for proper placement, making the replacement process simple and accessible, even for first-time users without technical experience. - PRACTICAL APPLICATIONS: Ideal for regular pool maintenance, these filters are perfect for homeowners looking to enhance their pool's cleanliness. Whether you're preparing for a summer pool party or simply enjoying a swim, these filters help maintain optimal water clarity and hygiene, making your pool experience more enjoyable.