Kohler K-3639-0 Archer Class Five Elongated One-Piece Toilet, Less Supply, White 29" x 17-3/4" x 26-1/4" 12" rough-in Class Five(R) Flushing Technology Includes Cachet(R) Quiet-Close(TM) toilet seat with Quick-Release(TM) functionality Meets strict flushing performance guidelines established by the EPA (Environmental Protection Agency) WaterSense program