Behlen Country PR3016 Water Boy Tank with GTV Valve, 30-Inch Diameter by 15-Inch Deep Ideal for watering animals on a temporary or permanent basis Includes an automatic, non-siphon valve (gtv). adjust the water level by the turn of a knob. 30-inch diameter by 15-inch deep; approx. 30-gallon. Premium UV Protection assures long life and resistance to color fade in outdoor use Molded-in carrying handles and a recessed hose inlet