This classic double residential Mayne mailbox post is manufactured by molding premium high-grade polyethylene plastic to provide long-lasting beauty and durability. No painting, no treating, no sealing… just enjoying, enjoying, enjoying. Unlike wood, Mayne products keep their good looks year after year with just an occasional rinse with a garden hose. Mounts over a pressure treated 4"x4" wood post, not included. Holds two small sized mailboxes, up to 5 lbs each. Mailboxes not included. 15-year warranty. 56.5"H x 41.5"W. Base is 8" square. 18 lbs. Available in Clay, White, Granite, or Black.