This double sided fence requires a larger capboard to cover both sides of the fence and the boxed post. Capboards can be 2×4″s, 2×6″ and larger depending on the width of the fence and support for the capboard. This particular fence does not have capboard trim on the exterior side. Trim is usually necessary to hide irregular picket heights but this fence with both a curb and a capboard is perfectly fitted and does not need trim for cosmetic purposes.