The Hayward replacement filter cartridge is designed for compatible C225 filter applications where the internal filter element needs replacement. A filter cartridge is useful because it captures dirt and debris as water moves through the system, helping maintain cleaner water and dependable filtration.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 more dependable filter performance and clearer water.The CX225RE is a practical service part when a compatible Hayward C225 filter needs a cartridge to restore dependable filtration performance. Hayward replacement filter cartridge Fits compatible C225 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