Enhance your pool cleaning experience with this set of ultra-fine cartridge filter panels for Dolphin M500 and M400 pool cleaners. The set includes 4 rectangular panels in sleek black color that are compatible with the Dolphin brand. Perfect for maintaining a clean and clear pool, this vacuum cleaner part set is a must-have for any pool owner. With its easy installation process, this set of pool filter panels is a quick and efficient solution to keep your pool in tip-top shape. Whether you need to replace old filters or just want to upgrade your pool cleaner, these filters are an excellent choice. Get yours now and dive into a hassle-free pool cleaning experience!