Take your end panel and attach it to the wall side of your pantry cabinet. This will create more room for your pantry door to close. The panel needs to come out 20mm past the front of the cabinet to accommodate for the thickness of the door. Use two clamps, top and bottom, to hold the panel in place. Use your tape measure to make sure it’s 20mm out. Then screw the panel to the side of your cabinet with your drill, using counter sink bits before each screw.