The trim covers the lap joints and locks the boards in position to circumvent separation on uneven ground. The trim pack is made up of pre-drilled 3-1/4 inch broad best rails and corner moldings that connect on the raised bed with integrated screws. Just stick the side-board tenons throughout the https://beckettppuwx.wikifordummies.com/7899534/everything_about_cedar_for_raised_garden_beds