Ultima Selectronic Touchless Toilet Piston Flush Valve, Base Model, Dual Flush 1.6/ 1.1 gpf (6.0/4.2 Lpf)The Exposed Selectronic Toilet Flush Valve is now capable of meeting ADA clearance requirements when installed under a grab bar that is installed at 36 height from the floor to the top of the bar. The self cleaning piston design saves time and money by eliminating routine maintenance and preventing the valve from running due to clogs. Features