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Read All Questions & Answerswhat is the inside diameter of a 1" copper slip coupling fitting?
1
Thank you for your inquiry on the 1-in Copper Slip Coupling Fittings. The inside diameter of this fitting is 1.13 in. If you have additional questions, you can reach a NIBCO Technical Services Advisor, M-F 8am - 5pm EST, by phone at (888) 446-4226.
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