The TOTO Entrada E-Max 1.28 GPF Toilet Tank is designed for use with the Entrada C243EF or C244EF 1.28 GPF bowl. The Entrada tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. The Entrada tank features TOTO's E-Max flush technology, featuring a 3 wide flush valve. This reliable, highly efficient combination generates a powerful cleansing flush while only using 1.28 gallons of water. The Entrada tank comes equipped with a left-hand chrome trip lever. The Entrada tank meets the standards for EPA WaterSense, and Californias CEC and CALGreen requirements. Additional items needed for installation and use must be purchased separately: bowl, wax ring, toilet mounting bolts, water supply lines, and toilet seat.