Hayward StarClear C-500 Filter Cartridge (CX500RE) airbuttons and this Filbur FC-9750 grid

and this Filbur FC-9750 grid is designed in a 24 inch by 17-1/2 inch format for matching pool applications

or no longer providing the alignment and drive relationship the assembly depends on

A correctly matched flo thru heater is useful because it restores the heating function while preserving the physical size and application style the spa system was designed to use

The Pentair 520595 IntelliChlor union set includes two unions for compatible IntelliChlor plumbing connections

and this Gecko TSC-4 version is designed in a 10 button format for Pump 1

Hayward StarClear C-500 Filter Cartridge (CX500RE) airbuttons and this Filbur FC-9750 gridThe Hayward replacement filter cartridge is designed for compatible C500 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 performance. This replacement is especially useful when the original cartridge is torn, clogged beyond cleaning, collapsed, or no longer filtering effectively.