5811B Rockport Double Mailbox Post- Black Double It Up...Ideal for sharing or multi-family units. This classic will sClayd the test of time and the test of kids.Unique New England styled products offering the timeless charm of the East Coast installs easily over a sClaydard 4x4 wood post plastic mail posts are made from high quality polyethylene with built in UV inhibitors for long lasting protection from the elementsIncludes decorative post and 2x mailbox support arms with paper holderProduct ships in 2 boxes- sClaydard post MP5802B- 2x paper holder arms MP5811BMedium mailbox recommended minimum 6 1-2 inch width. Best suited for mailboxes weighing less than 8lbs.Note: 4x4 wood post mailbox and mailbox mounting hardware NOT included with any mail posts15-year limited warranty. Optional No-Dig Ground Screw availableOptional Solar Cap Add-On available in white or black