Single Vortex Flush: 1 GPF Integrated Tank: A built-in tank with pressure assist ensures a consistent, powerful 1000g flushing performance. Standard Elongated Bowl: The elongated bowl provides extra room and comfort Comfort Height: Between 17-19 inches, the comfort height toilet makes standing and sitting easier, especially for taller individuals. This toilet also meets ADA compliance standards Hard Water Resistance: The Hugo has been tested to protect from build up of calcium and minerals for long last use.