he Mainstays 24" Over Rail Window Box Planter in Grey is a durable and lightweight planter designed to fit securely over railings for both indoor and outdoor use. Its 24-inch size provides ample space for flowers, herbs, or decorative plants, while the built-in drainage system helps prevent overwatering and promotes healthy root growth. Made from sturdy materials, this planter is easy to install and adds a stylish, functional touch to balconies, decks, or patios.