DC-912500-1.9, Duracast 12500 Gallon Heavy Duty Vertical Tank | 912500 For quality storage strength that lasts, use Duracast’s heavy duty vertical tanks. These above-ground storage tanks are designed to ensure years of high-performance use. The polyethylene resin is compounded with UV stabilizers to slow down sun damage and keep tanks in top-notch condition. Their high impact strength and superior mechanical properties allow these tanks to stand up well in tough environments. People can use these tanks for a variety of purposes including chemical production, manufacturing, mining, agriculture and industrial purposes. These tanks feature a 22-inch vented lid for cleaning, filling and draining. To measure contents quickly, these tanks are equipped with gallon calibrations. This is a 1.9 specific gravity tank.