Carlon EXPCPLG-150 Expansion coupling for PVC conduit, Gray, 1-1/2" SpecialDiscount is it best to apply

is it best to apply the FLEX TAPE to the inside or the outside of the pool

Unit of Measurement: SAE

Provides a constant level of drinking water

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Carlon EXPCPLG-150 Expansion coupling for PVC conduit, Gray, 1-1/2" SpecialDiscount is it best to applyDesigned to compensate for length changes due to temperature variations in exposed applications of conduit runs. It prevents potentially harmful thermal stresses in the conduit itself or in any supporting structures. Trade Size: 1 1 2" Material: PVC Color: Gray For PVC conduit Expands to a maximum of 4 inch Standard: UL E137781, CSA 58382.