KOHLER Wellworth Black 1.28-GPF Single-Flush High Efficiency Toilet Tank

An American classic, this Wellworth high-efficiency toilet tank features innovative technology for powerful, low-consumption flushing. At 1.28 gallons per flush, this economical tank provides up to 16,500 gallons of water savings per year compared to a 3.5-gallon toilet. A protective coating lines the inside of the tank to prevent beaded moisture on the outside. This streamlined tank combines with a coordinated bowl to offer a high-efficiency flush.