This Promaster was custom built to be a simple and basic RV. We did install an all glass vented window in the sliding door and added a 13500 BTU AC unit and Maxx Air power roof vent. We built a small amount of upper cabinetry, closet and platform bed. It does have a kitchen cabinet with flip out shelf, fridge and full pressure water system with hot water, fresh and gray tanks. It is powered by a 2000 watt Xantrex pure sine inverter, 80 amp charger, battery isolator, and 30 amp shore power connection.