Casita has never installed roof A/C on the 16’ers, instead opting for a window unit on the floor in the right front corner (deluxe) or center front (standard). You could probably duplicate that installation, but there are three things you have to deal with: (1) two large holes in the
fiberglass for air intake and exhaust, (2) baffling Inside the compartment to separate intake and exhaust, and (3) drainage for excess condensation. It’s not particularly efficient for air flow down on the floor.