Edgemere® Two-Piece Dual Flush 1.28 gpf/4.8 Lpf and 1.0 gpf/3.8 Lpf 12-Inch Rough-In Chair Height Elongated-Front Toilet with SeatThe Edgemere 2 Piece Dual Flush Chair Height Elongated Toilet from American Standard offers 2 flush options to conserve water. Choose 3. 8 Lpf for a lighter flush that uses 21% less water than the more robust flush using 4. 8 Lpf. Whether using light or full flush, the PowerWash rim releases a vigorous flow of water to help keep the bowl clean with every flush. The Edgemere dual flush toilet coordinates perfectly with the Edgemere Bath Collection.