Kohler K-21107-ST Guía De Instalación Y Cuidado página 3

1. Remove the Insert (Optional)
NOTICE: The center insert will only fit sink installations where no
garbage disposal is installed. Follow the steps below to remove the
center insert. Skip to the "Position the Sink Shelf" section to leave
the center insert installed.
Firmly hold down the main section of the shelf rack.
Disengage the four plastic connectors one at a time by carefully
pulling upward on the center insert.
Remove the plastic connectors and the center insert.
Kohler Co. 3 1323346-2-A