With the rustic pot rack hanging securely on the wall, you'll need to prepare the cleat cover to hide the french cleat from view.
Measure the distance (vertically) from the bottom of the top stretcher on the rustic pot rack down to the bottom of the french cleat that is installed to the wall. This will be the width to which you need to rip the cleat cover, which is a section of 1x6 rough-cut cedar.
Set up your Table Saw fence so that it is this same distance from the edge of the saw blade. Adjust the height of the blade to about 1-inch above the table, and rip the piece of 1x6 cedar.
Next, measure the exact width of the opening in the rustic pot rack between the two vertical 2x6 stiles. This is the length to which you need to cut the ripped cleat cover before you mount it onto the cleat in the next step.