American Standard Ultima Selectronic Touchless Toilet Flush Valve, Piston Type, Battery, 1.6 gpf 6.0 Lpf 6065161.002 Size 54" x 36" Cartridges easily insert into liner Cartridges easily insert into liner cavities of all Koala KB200 Typically specified for small ADA stall side walls with limited clearance Fully mechanical manual override can operate without power no filters to clean Selectronic® Proximity System with programmable sensor allows for easy adjustment and customization State of the Art Electronics prevent ghost flushing Fully Mechanical Manual Override Button can flush the valve without power Fail Safe: Valve automatically closes upon loss of power or water pressure and does not need to be reset Adjustable Sanitary Flush cleans the fixture & maintains the trap seal