Fluidmaster Duo Flush Complete Fill & Dual Flush Conversion System

This is a brand new, unused Fluidmaster Duo Flush (Model 550DFRK-3) toilet repair and conversion kit in its original packaging.

The system is designed to retrofit into standard 2-inch flush valve toilets to convert an existing setup into water-saving dual flush technology. It features a split-handle design that provides a "Half Flush" for liquid waste and a "Full Flush" for solid waste, helping to reduce home water consumption by up to 45%. The box includes a complete set of internal components wrapped in their original protective factory plastic. The kit features the PerforMAX High-Performance Fill Valve, known for its highly quiet operation and a 2x faster refill rate than standard valves. Installation is streamlined to snap onto the existing setup without requiring the removal of the toilet tank's original flush valve.