TOTO continues to advance our leadership in eco-efficient fixtures and fittings with the introduction our 1/8 GPF High Efficiency Urinals (HEUs). Our new HEU's and 1/8 GPF EcoPower� Flush Valves are engineered to work together as a system to achieve the ultimate in water conservation and flushing performance. When ordering TOTO 1/8 GPF HEUs, TOTO 1/8 GPF EcoPower Flush Valves are highly recommended for maximum performance.