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®, 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.