Extra-Large Steel Post-Mount Mailbox - Black The Extra-Large Size Galvanized Steel Post Mount Mailbox is constructed from heavy-duty galvanized steel and has a durable ribbed body for extra strength. The mailbox is an extra-large capacity unit that can accept various mail types including magazines and small parcels and can hold large volume mail deliveries or day's worth of mail. The mailbox features a rust resistant powder coat finish for lasting durability and stylish curb appeal. Product Specifications: Protective Qualities: Rust-resistant Dimensions: 25.1 inchesH x 12 inchesW x 15.3 inchesD