EP Henry 12050416 11-1/2" Vertica Harvest Blend Wall Cap - This 11-1/2" wall cap is part of the EP Henry Vertica Retaining Wall system. EP Henry Vertica Retaining Wall is perfect for bringing aesthetic appeal to tall walls and tight spaces. The rich, aged look of Vertica Stone Cut Finish (available by special order) provides an appealing alternative to a splitface texture.