Few people at the RV factory take the time or spend the money to actually learn much about the stuff they add on. Some marketing guy went to an RV show and talked to some owners. A couple of them mentioned they wished they had a propane outlet for their grill, so when the marketing guy got back to the factory, he said "we need an outside propane outlet". And the product engineering dept (5 guys who used to work the assembly line) figured they could put a Tee in the coach LP line and an outlet on the side. Voila! Another "market requirement" quickly & inexpensively met! They weren't shipping a grill with the coach, so nobody bothered to check to see if there were many that could actually use that low pressure outlet. Good intentions, but poorly executed.