This portable polyethylene gray/black water holding tank is only 6" high! Add another one inch for the fill cap and it is still the lowest portable tank on the market. That allows it to be rolled under very low riding vintage trailers. When full of that much water, it can weigh about 140 pounds, so its a good thing it has two sturdy wheels and an integrated handle. It fact, it comes with a steel handle extension, too, to save your back. Just roll it over to a spot that it can be dumped and tip it up. It is 33" x 30" wide. Equipped with a 3 male bayonet outlet, a 3/4 garden hose outlet and heavy-duty wheels. Comes with a 3 bayonet cap, 18" long garden hose for gray water use and five feet of 3" diameter sewer hose with adapter for the bayonet fitting on the tank.