From The Manufacturer
Additional Trough diffuser assembly (15544), Note: 1 diffuser already included with each PowerRinse Trough system ordered. Trough diffuser re-circulates water from farthest end of trough to PowerRinse basket. Please note, diffuser is not the same as a Trough Nozzle.
Images are for reference. Color, configuration, dimensions and what's included vary by model.
