Package Includes: Fresh water tank, gray water tank, 6 gal electric water heater and on demand 110V water pump, drain and fill valves, 3 sink dish wash and a single hand was sink all mounted in base cabinets. Completely installed ready to use. (must add electrical service separately if you desire). Requires a minimum 7' wide model. Generally installed across front wall of trailer on 8.5 wide models. Can be installed on the driver side wall up front on a 7' wide or 8.5 wide model.