Introducing Crescent Garden's innovative TruDrop Slat self-watering plant box, seamlessly blending traditional slat design with cutting-edge functionality. Perfect for enhancing your patio or windows with vibrant blooms, these flower boxes have an optional custom brackets (sold seprately) for effortless installation, ensuring a sleek and hidden appearance. Alternatively, utilize them as low perimeter barriers on balconies or entryways. Experience hassle-free gardening with Slat self-watering window boxes today! Small planter measures 23" x 13" x 12" H Medium planter measures 35" x 13" x 12" H Large planter measures 47" x 13" x 12" H Experience the convenience of 4-6 weeks without watering thanks to the innovative TruDrop One with built-in self-watering technology. Instructional guide here. See how the TruDrop system works here  10 Year Limited Warranty Easy to read water level indicator lets you know when your planter needs a refill. Double-walled design ensures root protection and weather durability Food-safe Environmentally friendly: 100% recyclable, 50% less water and fertilizer usage Can be used indoors or outdoors.