The Dolphin Ultra Fine Filter Cartridges, Set of 4 9991432-R4 is the perfect addition to your pool cleaning accessories. These high-quality filter cartridges are designed to work seamlessly with Dolphin robotic pool cleaners, providing superior cleaning performance and efficiency. Made from durable materials, these filter cartridges effectively capture dirt, debris, and other particles, leaving your pool water crystal clear and sparkling clean. Each set includes four filter cartridges, ensuring that you always have a spare on hand. Installing the Dolphin Ultra Fine Filter Cartridges is quick and easy, allowing you to get back to enjoying your pool in no time. Invest in the Dolphin Ultra Fine Filter Cartridges today and experience unparalleled pool cleaning performance.