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Extendable shower arm for ceiling application
1/2-inch NPT thread
Fits virtually all showerheads
American Standard - Style That Works Better
From the Manufacturer
This extendable shower arm is designed for ceiling applications and fits virtually all showerheads. Constructed in brass, it has a half-inch NPT thread and is shown in Polished Brass.
American Standard 1660.190.099 12-Inch Ceiling Mount Shower Arm with 1 2-Inch NPT Thread Polished Brass B0028BN42A