3770018 1.28 GPF Wall Mounted Single-Flush Manual Exposed Flushometer in Polished Chrome. Solenoid Activated Sloan Model Flushometer for floor mounted or wall hung rear spud fixtures. Model ES Flushometers are activated remotely by an electric push button (not included). Sloan ES Flushometers offer solutions for installations ... - 3770018 1.28 GPF Wall Mounted Single-Flush Manual Exposed Flushometer in Polished Chrome.