To put it bluntly, It is the stupidest idea I have ever heard. That valve is NOT designed, nor will it fit properly in a wall. One reason being that there is nothing to secure it to. Buy a Danze wall mount faucet with the handles you like and as a bonus you get the proper spout in the right color. They do NOT make wall spouts to fit that connection, although that is the least of your problems with it, since you would not need to use that center portion.