The Hayward Perflex flex tube nest is designed for compatible EC30 DE filter applications where the internal tube nest assembly needs replacement. A flex tube nest is useful because it provides the surface area and structure needed for DE filtration, supporting the filter’s ability to trap fine debris and keep water cleaner.This replacement is especially useful when the original tube nest is torn, clogged beyond cleaning, damaged, or no longer performing correctly. Replacing the internal assembly can help restore more dependable filtration without replacing the full filter tank.The ECX1133 is a practical service part when a compatible Hayward Perflex EC30 filter needs a tube nest to restore dependable filtration performance. Hayward Perflex EC30 flex tube nest Designed for compatible DE filter applications Helps restore internal filtration support Useful when the original tube nest is damaged or worn Supports cleaner and more dependable filter performance