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Left / Right Couplings & gas runs -- problems? gotchas? | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
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Southland 1/2 in. Galvanized Malleable Iron FPT x FPT Left & Right Merchant Coupling Fitting 511-423HN - The Home Depot
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LASCO 28-0519 Galvanized Nipple and Coupling with Right and Left Hand Thread, 1-Inch x 4-Inch - Amazon.com
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