The Valencia Window Box Collection offers a beautiful tulip shape. This durable construction offers a low maintenance solution and cleans with just a simple rinse of a garden hose. This window box features a double wall design creating a water reservoir. This self-watering effect helps to retain the right amount of moisture and protect delicate roots from daily temperature extremes and encourage healthy growth. This results in healthier plants that require less watering. Constructed from 100% polyethylene which delivers an amazingly realistic, incredibly strong and remarkably lightweight window box. The weather-proof and ultra-tough construction allows you to enjoy your window box all year long with very little winter preparation. Inside Dimensions: 33.2″L x 7.1″W x 7.5″D. Soil Capacity: 6 Gallons. Includes 3 wall mount brackets with a black powder coated finish. 15 Year Warranty – Residential Application, 5 Year Warranty – Commercial Application. For further questions please contact MAYNE INC at 1-866-363-8834. Made in the USA.