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That is for a Waterway 5 Pack Combo containing (five) 2″ Heater Gasket Orings designed to suit all same old 2″ Spa Heater Assemblies.
For two” Plumbing ( Exact Measurement Across Gasket is 3″ ).
Replacement for Gecko, Hydro Quip, Aeware, United and so much different Drift Thu Assemblies.
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