Measure the area with a measuring tape. To do this, place the tape next to the space, and it will indicate the distance between the two objects.
Cut the wood that will be able to fill the space between the dishwasher and the countertop.
Locate the final one in the exact middle of the dishwasher. Next, add the wood panels on the bracket.
Use putty along the wood to cover up all of the joints. There should be no gaps or openings visible between the wood panels.