The Hayward StarClear Plus filter cartridge is designed for compatible StarClear Plus filter applications where the internal cartridge element needs replacement. A filter cartridge is useful because it captures dirt and debris from circulating water, helping maintain cleaner water and dependable filtration-system performance.This replacement is especially useful when the original cartridge is torn, clogged beyond cleaning, collapsed, or no longer filtering effectively. Replacing the cartridge can help restore clearer water and more dependable day-to-day filtration.The CX1200RE is a practical service part when a compatible Hayward StarClear Plus filter needs a cartridge to restore dependable filtration performance. Hayward StarClear Plus filter cartridge Designed for compatible filter applications Helps trap dirt and debris for cleaner water Useful when the original cartridge is worn or clogged Supports cleaner and more dependable filter performance