NOTE: On models with 4" main frame standard, you must also purchase the separate upgrade to 6" or 8" Main Frame. This Water and Sinks Package includes: Base cabinet with 2 doors, stainless triple dish wash sinks, separate stainless single hand wash sink, 30-40 gal fresh water tank (mounted inside under cabinet) 40-50 gal Gray water holding tank (mounted under trailer), electric water heater, water pump, GFI 110V outlet, city fill and waste outlets. (110V electrical service panel must be purchased separately, if desired.)