The Mayne Nantucket Window Box Collection features a bowed front raised panel design pronounced crown molding detail and built-in overflow drains. Features: Mayne products are made with 100% high-grade polyethylene resin. The resin used in this window box has built-in UV inhibitors that ensure it does not fade easily. Double wall design provides the soil with adequate insulation from surrounding weather conditions. Built-in water reservoir provides your plants with a consistent source of moisture. Mayne offers a 15-year residential warranty or a 5-year commercial warranty on this 4ft window box. Mayne products are proudly designed in Canada and made in the USA. Specifications: Color/Finish: White Commercial/Residential: Both Hardware: Included Included: Instructions 4 steel wall mounts fill port plug Material: Polyethylene Resin Plastic Product Dimensions: 10 H x 11.5 W x 48 D Product Weight: 17 lbs Warranty: (Residential) 15 years; (Commercial) 5 years