On the way back from Elkhart, another 310GK pulled in a couple of sites down - 3 ACs on top. That was an option when we purchased but due to supply chain issues, only the larger units were getting them. What we received were two 15K Colemans. Made me wonder if the normal config is 15K living area and 13.5K bedroom or two 15K units for a two AC version. Our bedroom AC goes a long way to cooling off the entire interior.