Sloan rear spud wall hung toilet systems, combine the performance of both the fixture and the flushometer to ensure a true, water-efficient system. Wall hung toilets flush with an average of only 1.28 gpf (4.8 Lpf) of water and may be specified with a sensor activated flushometer. Sensor activated and manual flushometers deliver high performance, while minimizing maintenance. Also available in 1.6 gpf.