Mayne 5809-BK Rockport Single Mailbox Post 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 side mount support arm with paper holder. Note: 4x4 wood post, mailbox, and mailbox mounting hardware NOT included. Ships in 2 boxes (standard post MP5802W / arm MP5809W). Additional measurements: Paper holder inset panel measures 3.25in H x 10.5in L, top inset panel on the post measures 1.9in W x 25.5in H, paper holder mounting surface measures 6.125in W x 17in L. Medium mailbox recommended, minimum 6 1/2 inch width. Best suited for mailboxes weighing less than 8lbs. 15 Year Warranty  Residential Application, 5 Year Warranty  Commercial Application. Made in the USA.