The TOTO Entrada Universal Height Elongated Toilet Bowl is designed for use with the Entrada ST243E 1.28gpf tank. The Entrada bowl features an extra-large siphon jet, and a large trapway. The Entrada bowl is designed in TOTO's Universal Height which allows for a more comfortable seat position across a wide range of users. The Entrada is ADA compliant and when paired with the ST243 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: tank, wax ring, toilet mounting bolts, water supply lines, and toilet seat.