H2Option® Two-Piece Dual Flush 1.28 gpf/4.8 Lpf and 0.92 gpf/3.5 Lpf Chair Height Elongated Toilet With Liner Less SeatThe H2Option Dual Flush Right Height Elongated toilet is a water efficient gravity flush toilet. Ultra High Efficiency for water savings, this toilet gives you the choice of either a full or partial flush for maximum water savings. With a 16 1 2" rim height, the H2Option Right Height toilet sits higher off the ground than standard height toilets for unbeatable comfort.