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Just one of over 450 new State commercial water heaters for 2003, the Ultra Force(TM) (SUF) gas series delivers extra-high 94% thermal efficiency for more hot water with lower energy costs. Ultra-Force also offers the flexibility of powered standard venting or direct venting, using PVC pipe, and zero clearance to combustibles on all sides. State offers a 100-gallon tank size on all models, with input choices of 150,000 Btu, 199,000 Btu and 240,000 Btu. State Water Heaters. Circle 4.