I had a professional plumber install this set as we had to have some "in the wall" stuff changed out in order to accomodate this purchase. He said it went in with no problem. I like the way it works. The "off" position is horizontal and turns full "on" by pushing down no more than vertical (1/4 turn) or anywhere inbetween depending on the temperature you like. The diverter has a "neutral" position at the horizontal location where it will shut the water off to either the shower or the tub and keep the temperature settings. Good if you like to lather up and save water then flip it back up to shower off . The only little negative I've found is that the diverter valve handle won't stay screwed in tight. It's not a problem to tighten it up but it is a little annoying. The handles are a little delicate looking and a man might want something a little beefier.