The GoPool Replacement Cartridge - Hayward SwimClear C5020, C5025, C5030, and W3C5030 (CX1280XRE) is designed to provide superior and long-lasting filtration for your pool water. Specifically compatible with Hayward SwimClear Multi Cartridge 525 sq ft filter models, this cartridge effectively captures fine impurities, debris, and suspended particles to keep your water clear, clean, and perfectly balanced. Made from high-quality polyester filter media, it delivers performance equivalent to the original cartridge while extending the life of your filtration system. Easy to install and simple to clean, the GoPool cartridge is a reliable and cost-effective solution to replace a worn cartridge.