The Washlet + Nexus 1G Two-Piece Elongated 1.0 GPF Toilet and AutoFlush Contemporary Washlet S500e Bidet Seat is designed to conceal the Washlet+ power cord and water supply hose for a seamless installation. The Washlet S500e features a technologically advanced Ewarter+ system that uses electrolyzed water generated by a technologically advanced process, transforming the water into a safe and powerful compound. By misting the bowl after every use, the Ewarter+ technology helps to keep your toilet bowl clean and hygienic without any extra harsh chemicals. The Premise function sprays the bowl before each use to prevent waste buildup, keeping the bowl clean. The Washlet S500e is operated by a luxury style illuminated touchpad remote with 2 user memory to save preferred settings. The Washlet features 5 spray settings, heated seats, and instantaneous water heating. The newly redesigned lid style resides flush with the toilet bowl, providing a streamlined look and giving the impression of an integrated system. The minimalistic display provides a more subdued appearance to your Washlet. Skirted Design toilets also minimize the need to reach behind the bowl to clean the nooks and crannies of the exterior trap way. The New Auto Flush kit provides a hands-free automatic flush after every use. No need to touch buttons or handles, and never worry about someone forgetting to flush. The Toilet 1G features industry-leading 1G technology, offering a powerful flush that flushes completely and fully with only one gallon of water. The Tornado Flush system has a hole-free rim design with dual nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently. This version of the toilet includes Cefiontect, a layer of exceptionally smooth glaze that prevents particles from adhering to the ceramic. Cefiontect, Ewater+, and Tornado Flush create a synergy that optimizes performance to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning. The Nexus comes ready for installation into a 12" rough-in, but may be adapted for a 14" rough-in with the purchase of a separately sold adapter. Additional items needed for installation must be purchased separately: wax ring, toilet mounting bolts, and toilet water supply lines. Compatible with T40 Washlet + electronic bidet seat and toilet bowl components only.