The TOTO Drake 1.28 GPF Insulated Toilet Tank is designed for use with compatible Drake bowls. Compatible Drake bowls feature 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. This version of the tank comes equipped with a left-hand chrome trip lever. The insulated tank prevents the condensation or sweating that occurs when cold water from the outside fills the tank. This tank meets the standards for EPA WaterSense(R), and California's CEC and CALGreen requirements. The Drake tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. Additional items needed for installation and use must be purchased separately: compatible Drake toilet bowl, wax ring, toilet mounting bolts, water supply lines, and toilet seat.