Waterway Crystal Water Standard Base Cartridge/DE Coupling [2" Union x 1-1/2" MPT] (419-7241) paragon A part like this is

A part like this is useful because it restores the visible upper support area around the skimmer opening

Supports cleaner and more dependable system routing

the system can no longer maintain the filtration support it should

supporting a more stable fit and a more complete rebuild during service

Waterway Crystal Water Standard Base Cartridge/DE Coupling [2" Union x 1-1/2" MPT] (419-7241) paragon A part like this isWaterway Crystal Water Standard Base Cartridge DE Coupling [2" Union x 1 1 2" MPT] is a Waterway plumbing fitting used to connect, adapt, or repair compatible pool, spa, and bath plumbing lines. Its sizing and configuration are designed to help match specific Waterway equipment layouts and service requirements. It is well suited for equipment pad repairs, plumbing transitions, and replacement work where the original fitting style and part number