You never know what the next season is going to bring, but the CobraCo 24 in. to 36 in. Adjustable and Expandable Flower Box Holder is the planter that's going to grow or shrink as you need it to. The body of this planter is made from all-weather metal with a painted finish that's offered a range of colors. The adjustable design lets you go from 24 to 36 inches in length. The adjustable brackets also provide a snug fit on railings from two to six inches. The flat bottom of the planter also allows you to set it on a ledge, wall, or step. A fitted coco liner gives it a warm color while holding in plenty of soil and providing excellent drainage to accommodate a wide range of plants.