My trailer came with a
Two Handle Shower Valve with Vacuum Breaker assembly similar to the one in the link. It was installed with the vacuum breaker which was not replaceable was pointed down. I wound up snapping it off. I replaced it with the Phoenix model in the link which has a replaceable vacuum breaker. The valve assy can be installed with the vacuum breaker pointing up or down. The hot and cold handles can be swapped to suit which side you need them on. I would like to have found one that had a spout with the vacuum breaker on top, but the models with spouts always have the shower pull handle to divert the water to the shower hose on top.