Dometic Vent & Flue Kit, 5 piece, AS1625-KIT-B, Current style. (excludes T-piece usually required). The advanced ventilation system -Model AS1625- was especially designed to provide optimum ventilation and therefore significantly better cooling performance of the Dometic absorption refrigerator.
It features two mounting frames are permanently installed onto the outer wall of your RV, plus easily removable ventilation grills that differ from the top and bottom.
The bottom grill lets fresh cool air in, while the top vent has two outlet sections. The small section on the right takes the exhaust gases/heat directly outside and the larger section takes the warmed up air that flows past the fridge fins to the outside.