I don't know about the 2015s, but my 2011 26LRSS had one that was capped off. The gas line runs along the door side from the front to the kitchen stove and they just put a T along the line about midway between the two doors. It is a low pressure outlet so you have to use a grill that has no requlator. I used the Olympian 5500 and bought the connectors on line. I see no reason that they would change it since an exterior grill is still an option.