All-in-one standard size, polymer mailbox and post combination. Rubbermaid Gentry. USPS (United States Postal Service) approved. Features virtually indestructible double wall plastic construction. The mailbox has a rear door for safe mail retrieval, keeping children and adults away from traffic. It is large enough to allow magazines to lay flat. The post features a built-in compartment for newspapers or small parcels. Installation is quick and easy. The unit easily slides over a new or existing 4x4 post (not included).