Window Box Brackets Adjustable Planter Box Brackets Wall Mount Flower Box Brackets for Window Sill, Fence or Wall (4 Pack)Adjustable BracketOur planter box brackets have an adjustable feature that allows different sizes to be adapted to meet all installation needs with maximum flexibility. Easy to InstallAll necessary accessories are included, and with the provided wing nut screws, you can simply slide the bracket into place, tighten it, and fix it to the wall. Sturdy and DurableThe planter box brackets feature a reinforced bottom structure, providing outstanding support