Kohler's Cimarron Comfort Height™ toilet is its first to feature the exclusive Class Five™ flushing system, a 3-1/4-inch flush valve and direct-fed jet technology. It is engineered to provide extraordinary bulk flushing performance. Installation is made easy with Kohler's DryLock™ installation system. A metal bracket plate is snapped around a rubber gasket on the bottom exterior of the tank. Two bolts slide and snap into the bracket plate, then the tank is set down on the toilet and tightly fastened using a 1/2-inch socket wrench. The toilet offers a 1.4-gallon flush setting option to conserve water and is built to provide chair-height seating.