Product details:

Upgrade your bathroom with the quality and innovation of the American Standard 2462.100.020 Cadet Elongated Two-Piece Toilet. It has an ultra-low consumption high-efficiency design that uses 31 percent less water and meets EPA WaterSense criteria. The 1.1 GPF toilet features an EverClean surface that inhibits the growth of bacteria, mold and mildew. The sleek, classic style ensures that it will fit with any bathroom decor. This pressure-assist toilet is available in various colors and comes complete with a 12 rough-in.Top to Bottom: 29.25 Overall Width.
Side to Side: 20.5 Overall Depth.
Front to Back: 29.25 Seat Height: 15 Tank Height.
Top to Bottom: 14.25 Tank Width.
Side to Side: 20.5 Tank Depth.
Front to Back: 9 Trapway Diameter: 2.