Mayne 5805-CL Liberty 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 large decorative post and mailbox support arm with built-in paper holder slot - Note: 4x4 wood post, mailbox, and mailbox mounting hardware NOT included. Product ships in 2 boxes (liberty post MP5806C / arm MP5807C) Medium or large mailbox recommended, minimum 7 inch width. Best suited for mailboxes weighing less than 16lbs. 15 Year Warranty  Residential Application, 5 Year Warranty  Commercial Application. Made in the USA.