Toto CST642CEFGAT40 Features (Washlet Not Included): Elongated one-piece skirted design toilet is easier to maintain versus a two-piece toilet 1.28 gallons per flush Tornado Flush system with a powerful centrifugal rinse Cefiontect glaze gives the bowl a lubricious quality that prevents particles from adhering Important: Toto Washlet+ upgrade compatibility: designed to work exclusively with a T40 Washlet+ bidet seat for seamless integration Auto flush compatible Left-hand chrome trip lever ADA, WaterSense, CALGreen, and CEC compliant See models MW6423046CEFG or MW6423046CEFGA for Washlet included Toto CST642CEFGAT40 Specifications: Overall Height: 27" (from bottom of the base to the highest point of the toilet) Overall Depth: 29-3/8" (furthest point back to front of toilet) Overall Width: 17-1/2" (furthest point left to furthest point on the right) Bowl Height: 16-1/8" (floor to the top of the bowl) Flow Rate: 1.28 gallons-per-flush Trapway (Discharge Passageway) Size: 2-1/8" Rough-In: 12" Distance Between Toilet Seat Installation Holes: 5-1/2"