I was thinking something more like this:

https://www.amazon.com/Dearborn-P9703WBG-Threaded-Adapter-Reversible/dp/B00DZTK3L4?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=AC1RLSY3YBH4K

The "union"/"slip fitting" going into the wall tube allows for some horizonal adjustment.