UltraFine Filter Basket 9991459R1 Compatible replacement for Dolphin S50, S100, Active 10, and T15 robotic pool cleaners Why you need this filter basket Captures ultrafine debris that standard baskets miss, helping maintain cleaner pool water and reducing manual skimming. Restores filtration performance when an original basket is worn, torn, or clogged. Reusable and easy to clean to keep your robotic cleaner operating efficiently between service intervals. Key benefits and features Function: Finemesh filter basket designed to trap small particles such as sand, silt, algae, and fine leaves while allowing normal water flow. Compatibility: Direct replacement for part number 9991459R1 and compatible with Dolphin S50, S100, Active 10, and T15 robotic pool cleaner models. Durable construction: Built to withstand repeated handling and rinsing, designed for regular pool maintenance. Easy installation: Simple dropin design for quick, tool replacement of the original basket. Low maintenance: Rinse with a hose to remove debris; basket is reusable and ready for immediate reinstallation. Performance: Helps reduce load on the cleaner motor and filters by capturing fine debris before it reaches internal components. Practical use scenarios Routine weekly maintenance: or use as a spare basket to capture fine debris during regular cleaning cycles and maintain consistent filtration performance. After a storm or heavy wind: Install the ultrafine basket to pick up increased amounts of silt and small leaves that can otherwise bypass coarser filters. Seasonal pool opening or closing: Use the basket to remove accumulated fine debris while preparing the pool for seasonal changes, reducing time spent on manual cleanup. What to expect A compatible, readytoinstall filter basket that restores fineparticle filtration for listed robotic cleaner models. Simple upkeep with straightforward rinsing and inspection to prolong the life of your cleaner and maintain cleaning efficiency. Compatibility reminder Replacement for part 9991459R1 and compatible with Dolphin S50, S100, Active 10, and T15 robotic pool cleaners. Confirm model compatibility before .