Built-in UV inhibitors help our polyethylene signs endure season after season. Painting and up keep of those old wood signs are a thing of the past. Unique New England styled product offering the timeless charm of the East Coast, installs easily over a standard 4x4 wood post. Mayne plastic mail posts are made from high quality 100% polyethylene with built in UV inhibitors for long lasting protection from the elements. Includes decorative post and support arm. Product ships in 2 boxes (standard post MP5802BK / standard arm MP5803BK). Note: 4x4 wood posts, address plaque, and plaque mounting hardware NOT included. Will accommodate plaques up to 15 inches wide x 12 inches high. 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.