A: This shower arm should fit the "delta mylan 144777SP rain shower head" as well as any other shower head unless the shower head in question has a non standard threading in which case said shower head will specify that it requires a specific threaded shower head arm.
A: Hello Dale, this unit will complement a number of showerheads, with a 1/2 in. IPS connections. Thanks
A: two ways find a arm that comes already in Matte Gold, or take the arm you like a and take it to a metal plating company
A: I needed to extend my shower head, further from the wall, without raising it up beyond my ability to reach and remove the detachable part of my shower head. This item accomplished that purpose.
A: It is 3/4
A: Hello, This is 12.4"
A: Hello HandywomanMD, This is 12.4"
A: This 12" length does not need exterior support. However, make sure the interior piping is sturdy/anchored to a stud.
A: not at all
A: Hello Mikey, No this does not need a bracket for installation.
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