Originally Posted by Nurek
my guess is the connections for the outdoor shower.
See inside the cabinet.
Just noticed that the GWT vents in there. Hmmm
I noticed that GWT vent when I switched out my faucet. At first I didn't know where it was going to or what was going to it until you just mentioned it.
But, you're probably right - connections to outdoor shower are probably behind that piece. I never thought about that