The GoPool Replacement Cartridge - Hayward SwimClear C4020, C4025, C4030, and W3C4030 (CX880XRE) is designed to provide powerful and consistent filtration of your pool water. Specifically compatible with Hayward SwimClear Multi Cartridge 425 sq ft filter models, this cartridge effectively traps fine impurities, debris, and suspended particles to keep the water clear, clean, and balanced. Made from high-quality polyester filter media, it delivers performance equivalent to the original cartridge while offering excellent durability. Easy to install and clean, the GoPool cartridge is a reliable and cost-effective solution to replace a worn cartridge and optimize your filtration system’s efficiency.