H2Optimum® 1.1 gpf/4.2 Lpf 12-Inch Rough Tank Finish:White Backed by over a century

Backed by over a century of experience

quick-release hinges to easily remove and replace the seat for cleaning

battery and solenoid valve located in the faucet spout

The dual inlet control box includes the dependable SmarTherm thermostatic mixing valve

Ultra-high efficient design uses just 1

H2Optimum® 1.1 gpf/4.2 Lpf 12-Inch Rough Tank Finish:White Backed by over a centuryThe H2Optimum Toilet Tank from American Standard provides powerful flushing action when paired with coordinating H2Optimum bowl, sold separately. Featuring a large flush valve, this toilet tank uses just 1. 1 gallons per flush to conserve water without sacrificing performance. The H2Optimum toilet tank is made of vitreous china for lasting durability.