The InSinkErator PRT-TROUGH DIFFUSER is an essential accessory for your scrapping system, designed to enhance the efficiency of your PowerRinse Trough system. This additional trough diffuser assembly (model 15544) re-circulates water from the farthest end of the trough back to the PowerRinse basket, ensuring optimal cleaning performance. Please note that one diffuser is already included with each PowerRinse Trough system ordered. This diffuser is distinct from a Trough Nozzle, providing targeted water flow for improved rinsing capabilities.