We offer 3 different roof styles: Dome, Low Profile Standing Seam, and 30-Degree Standing Seam. The metal water tanks come standard as G115 galvanized steel. You may also choose from any of our standard colors, or even select a custom color, thanks to our DuraCoat system. Our Enviro Clean liner is the toughest liner on the market! The strength, durability, and versatility of Aqualine Water Tanks truly puts our tanks head and shoulders above the competition.