Kohler Rite Temp pressure balancing valve rough-in for the new shower. Since this valve is pressure balanced it won't scald anyone if a toilet is flushed while someone is in the shower. So when it senses a drop in pressure from the cold water it will balance the hot side to match the cold and therefore the water temperature doesn't change.
The dual knobs for hot and cold are out and now we are in the 21st century with just the single handle valve. It came from the factory pre-set to 105 degrees. I dialed it up slightly to 110.