The TOTO(R) Glaston(TM) Universal Height Elongated WASHLET(R)+ Toilet Bowl is designed for use with the Glaston tank. The skirted design of the bowl conceals the trapway, which enhances the elegant look of the toilet and adds an additional level of sophistication. When paired with the corresponding TOTO Glaston tank, the bowl features TORNADO FLUSH(R): A hole-free rim design with dual-nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently. The TOTO Glaston bowl features TOTO's Universal Height which allows for a more comfortable seat position across a wide range of users. WASHLET+ toilets feature an opening on the bowl surface to help conceal your WASHLET+ supply line and power cord creating a seamless integration. When paired with the corresponding TOTO Glaston tank, the Glaston bowl meets the standards for EPA WaterSense(R), and California's CEC and CALGreen requirements. Additional items needed for installation and use must be purchased separately: TOTO Glaston tank, wax ring, toilet mounting bolts, water supply lines and a toilet seat.