Add curb appeal to a front porch, create a container garden, or decorate with seasonal plantings on a balcony or deck. Our 6-inch Flower Box Brackets for 2 x 4 Railings can be fixed to the top of a railing to securely hold any of our Achla Designs Small Galvanized or Copper Flower Boxes. For simple installation, place the two brackets at the desired width apart and secure with stainless steel screws provided. Also available for 2 x 6 inch railings for Medium and Large Flower Boxes.