316L Stainless Steel, 2 in x 3 in Fitting Pipe Size, Concentric Reducer Coupling - 1RUD9|4381019220 - Grainger
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Amazon.com: Beduan Stainless Steel Reducer Coupling, 3/4" x 1/2" Female NPT Reducing Cast Pipe Fitting : Industrial & Scientific
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Amazon.com: Universal 2.5" ID to 3" ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 2.5 Inch to 3.0 Inch 2 1/2” ID to 3.0” ID kit : Everything Else
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