Holding flower boxes. Our adjustable and expandable flower box holders expand from 24 inches to 26 inches. With so many ways to display your flowers and plants, you can add beauty to any deck or porch. Patent pending technology allows CobraCoTM® flower box and pot holders to adjust and easily conform to various flower box and pot holder sizes. The ability to adjust the size of these holders takes up less less space making it easy to store during the winter months. Planters and flowers shown in planters are not included....................White, Flower Box Holder, Adjusts To Accommodate 24" To 36" Flower Boxes & Will Adjust To Be Positioned On Steel Fences & Railings, 2" x 4" Wood Railings & 2" x 6" Wood Railings, Vinyl Coated Steel.