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1002-44RC - Fernco 1002-44RC - 4" x 4" Strong Back PVC Shielded Coupling (Clay to Cast Iron, PVC, Steel, Lead)
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The Plumber's Choice 4 in. PVC Flexible Coupling with Stainless Steel Clamps E72844 - The Home Depot
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3000-44 - Fernco 3000-44 - 4" x 4" ProFlex Coupling (Cast Iron to PVC, Steel or Extra-Heavy Cast Iron)
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