The TOTO(R) Drake(R) Elongated TORNADO FLUSH(R) Toilet Bowl is designed for use with compatible Drake tanks. The Drake features TOTO's TORNADO FLUSH(R), a rimless, hole-free design with dual-nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently. When paired with the correct tank, the toilet can meet the standards for EPA WaterSense(R), and California's CEC and CALGreen requirements. Additional items needed for installation and use must be purchased separately: compatible Drake tank, wax ring, toilet mounting bolts, water supply lines, and toilet seat.