Flower Box with Railing BracketsFlower Box with Railing Brackets Install the Flower Boxes with Railing Brackets by Achla Designs to add curb appeal to a front porch, create a container garden, or decorate with seasonal plantings on a balcony or deck. Our Large Green, Blue, White, Copper Flower Box Kit for 2x6 Railings has two top mounted brackets that securely hold our Large Blue, White, Copper Galvanized Flower Box planter. For easy installation, place the two wrought iron brackets