Fabricated from the finest galvanized steel, the Tarter 100 gallon Galvanized Stock Tank combines the best quality at the best value. Each tank features a 20 gauge galvanized bottom and 21 gauge sides as well as four-ply double-lock seam at the bottom sealed with Pliogrip Adhesive/Sealant Seam Sealer for a superior bond. Heavy duty zinc G90 coating helps tanks withstand harsh weather conditions and 1-1/8 inch top rim is permanently rolled for strong reinforcement.