The Aquia® IV One-Piece Elongated Dual Flush 1.28 and 0.8 gpf Universal Height WASHLET®+ Ready Toilet with CEFIONTECT® is the epitome of modern form and function. The skirted design conceals the trapway, which enhances the elegant look of the toilet and adds an additional level of sophistication. The one-piece design is not only aesthetically pleasing, but also offers the benefit of being easier to clean versus a 2-Piece toilet. By removing the gap between the tank and bowl, we eliminate the hiding place for dirt and debris. An additional benefit of the one-piece toilet is that there is no threat of leaks from bolts or gaskets that can occur in 2-Piece toilets. The Aquia® IV features Toto®'s DYNAMAX™ TORNADO FLUSH®, utilizing a 360 deg cleaning power to reach every part of the bowl. This version of the Aquia® IV includes CEFIONTECT technology, a layer of exceptionally smooth glaze that prevents particles from adhering to the ceramic. This feature, coupled with DYNAMAX Tornado Flush®, helps to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning. The enhanced design of the Aquia® IV inner bowl reduces water flow resistance and turbulence, resulting in a quieter flush. The chrome center-mounted push button that sits atop of the tank allows you to proactively conserve water by choosing between a 0.8 gpf rinse or 1.28 gpf for tougher jobs. This version of the Aquia® IV offers Toto® T40 WASHLET+ compatibility for when you are ready to upgrade. WASHLET+ toilets feature a channel on the bowl surface to help conceal your WASHLET+ supply line and power cord for seamless integration. The Universal Height design allows for a more comfortable seat position across a wide range of users. The Toto® Aquia® IV meets the standards for EPA WaterSense®, and California's CEC and CALGreen requirements. The Aquia® IV comes ready for install into a 12'' rough-in, but may be adapted for a 10'' or 14'' rough-in with the purchase of a separately sold adapter. Includes a SoftClose® toilet seat (#SS124). Additional items needed for installation and use must be purchased separately: wax ring, toilet mounting bolts, and water supply lines.