The Behrens B33 Dub-L-Tub tops out at 33.5 gallons, which is currently the largest size available in that specific oval hot-dipped galvanized steel tub line. Behrens does offer other tubs in different shapes (like round or utility tubs) that may come in larger capacities, but for the oval Dub-L-Tub style, 33.5 gallons is the max.