The Hayward Pro-Grid assembly is designed for compatible DE3620 DE filter applications where the internal grid assembly needs replacement. A grid assembly is useful because it supports the DE media inside the filter and helps trap fine debris, contributing to cleaner water and dependable filtration.This replacement is especially useful when the original grid assembly is torn, damaged, clogged beyond cleaning, or no longer filtering effectively. Replacing the internal assembly can help restore filter performance without replacing the complete tank.The DEX3600DC is a practical service part when a compatible Hayward DE3620 filter needs a Pro-Grid assembly to restore dependable filtration. Hayward DE3620 Pro-Grid assembly Designed for compatible DE filter applications Helps restore internal DE filtration support Useful when the original grid assembly is damaged or worn Supports cleaner and more dependable filter performance