The Edgemere®® dual flush 12 in rough-in tank from American Standard lends classic elegance to the bathroom. Defined by soft angles, this design ensures comfort, style and superior performance. At the press of a button, the dual flush toilet allows you to activate a partial flush of 1.1 gpf or a full flush of 1.6 gpf, using 31% less water than a standard toilet. Coordinates beautifully with the entire Edgemere®® collection.