Achla Designs Window Flower Box Wall Brackets, 12 inch, SFB-04 Pair of 12-inch Wall Mount Flower Box Brackets 12&quot;D at base x 10&quot;Hx 1&quot;W, Wrought Iron with Black Powdercoat finish Stainless steel mounting hardware included which may not be suitable for all applications Available in 6, 8, 10 and 12-inch sizes, Clamp-On and Handrail mounted styles Large or long, heavy window boxes are best support with the addition of a third bracket Windowboxes sold separately