DC-910500-1.5, Duracast 500 Gallon Plastic Storage Tank | 910500 These plastic storage tanks are designed with long-lasting quality in mind. The polyethylene resin is compounded with UV stabilizers to extend the life of these tanks and keep them in great condition for years. Able to combat both physical and chemical attack, these tanks perform well in stressful conditions. People can use these tanks to store a wide variety of contents, ranging from industrial chemicals to liquid feed. Their low temperature impact strength keeps these tanks from cracking in cold weather. Besides incredible strength, these tanks also feature convenient features like a 16-inch vented lid and measurement indicators. This is a 1.5 specific gravity tank.