EAGO TB336 High Efficiency Eco-Friendly Toilet, 1-Piece Stylish High Efficiency Toilet featuring 1.28 GPF. It's about time Soft Closing Toilet Seat and Lid Included Powerful and efficient 3" flushing valve. Reduces the number of problems typically associated with older ball-chain-flapper systems Wide water surface. A large surface area keeps odors down and allows for easy cleaning Balanced water distribution. Designed to maintain the optimal balance between an increased diameter and proper exit velocity