STERLING 402028-0 Karsten 12-Inch Rough-in Elongated Toilet with Dual Force Technology, White Dual Force technology allows the choice of .8 gallon flush for liquid or light waste. The 1.6 gallon flush is for bulk or solid waste Dual Force technology can save the average family of 4 up to 24, 000 gallons of water per year with the .8 gallon option Two-button actuator provides easy-to-use flushing options Crafted of Grade A vitreous china to provide a durable, non-porous product with a hard, glossy finish A sanitary guard helps prevent liquid from getting under the tank