Modifying a new Winnebago

For me the question would be, does a production window even exist to take up the space of the TV and 2 existing windows? Or do you insert another window between the 2 existing - which to me would look odd. Either option limits a lot of structural integrity especially on a wall in a slide mostly due to the fact that 2 other windows are already there. Adding another is a rather unusual gap in structure. Not saying it can't be done but I would question how much money you would have to throw at a window and at what risk. If it didn't come from the factory that way warranty won't cover issues, and Winnie could always take the position that if anything does go wrong with that slide, they could point the finger at the structural modification.