Our Self-Watering Windowboxes let you create a smart, consistent look around your home, while ensuring your plants don't dry out. They have big water reservoirs that keep soil moist and plants healthy. An easy-to-read water level indicator helps you keep the reservoir full, and adjustable steel mounting brackets allow for wall or deck rail mounting. Enjoy long-blooming, wilt-proof flower displays! Longer windowboxes also available: 31" Windowboxes and 39" Windowboxes Versatile brackets (included) allow installation in minutes Choice of White, Terra Cotta, Granite or Green Dress up these Windowboxes with our new Wood Facades, sold separately Our Self-Watering Container Mix is the perfect planting mix! 9" W x 7-1/2" H x 23" L Holds 17 quarts of soil 5 quart water reservoir Made of frost-resistant plastic Gardener's Supply Exclusive