Bring the beauty of live flowers to your home with the Mayne 36-Inch Rectangle Polyethylene Nantucket Window Box. Available in your choice of colors, you"ll love the classic double wall design and the sub-irrigation system which encourages root growth. This planter box is crafted from high grade polyethylene for durability, and includes a 15-year limited warranty. The inside of the box measures 31.5L x 8W x 7.5D inches and holds approximately 3.5 gallons of soil. Two steel wall mount brackets are included for easy installation. Crafted from high grade polyethylene for durability. Slightly bowed design in front. Lovely, double wall design. Sub-irrigation system encourages root growth. Includes 2 steel wall mount brackets. 15-year limited warranty. Measures 36L x 11.5W x 10H inches. Inside dimensions: 31.5L x 8W x 7.5D inches.