The TOTO Connelly Dual-Max, Dual Flush 1.28 and 0.9 GPF Toilet Tank is designed for use with the Connelly dual flush bowl. The Connelly tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. The Connelly tank features TOTO's Dual-Max dual flush option, allowing you to proactively conserve water usage. The left-hand chrome trip lever allows you to choose between a 0.9 GPF rinse or 1.28 GPF for tougher jobs. This version of the Connelly tank offers TOTO T40 WASHLET+ and AutoFlush compatibility for when you are ready to upgrade to a hands-free flush system with an electronic bidet seat. The Connelly tank 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: toilet bowl, wax ring, toilet mounting bolts, water supply lines, and toilet seat or optional WASHLET+ upgrade. The Connelly ST494MA tank can be used on compatible Connelly bowls.