The TOTO T40 WASHLET plus Vespin II 1G Two-Piece Elongated 1.0 GPF Toilet and Contemporary WASHLET S7 Bidet Seat is designed to conceal the WASHLET power cord and water supply hose for a seamless installation. The WASHLET S7 features TOTO''''s technologically advanced EWATER plus system that mists the wand and toilet bowl, reducing the need for harsh cleaning chemicals. PREMIST wets the surface of the toilet bowl, aiding in the removal of waste and resulting in a better clean. The TOTO WASHLET S7 is fully automated, including an illuminated remote control with 5 spray settings, heated seat, and instantaneous water heating. The Vespin II 1G features TOTO''''s TORNADO FLUSH, a hole-free rim design with dual-nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently. TOTO''''s industry leading 1G technology offers a powerful flush that flushes completely and fully with only one gallon of water. This version of the TOTO Vespin II 1G includes CEFIONTECT, a layer of ceramic glaze that minimizes waste from sticking to ceramic surfaces. This feature, coupled with the WASHLET PREMIST and TORNADO FLUSH, assists to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning. The TOTO Vespin II 1G is designed in TOTO''''s Universal Height, which allows for a more comfortable seat position across a wide range of users. This WASHLET plus includes the WASHLET with water supply adapter, Vespin II bowl and tank set with hardware, and toilet bolt caps. Compatible with T40 WASHLET plus toilet bowl components only. The Vespin II may be adapted for 10'''' or 14'''' rough-in with the purchase of a separately sold rough-in. Additional items needed for installation must be purchased separately: wax ring, toilet mounting bolts, and toilet water supply lines.