Architectural Mailboxes' Chadwick mailbox is durably made from galvanized steel for longevity then fully powder coated in a black finish with contrasting nickel flag. Equipped with an attractive cast aluminum handle and textured molded resin frame, this fully assembled mailbox installs easily onto Architectural Mailboxes post models 7505B-10, 7507B-10, and 5525B-10. Mounting hardware sold separately with post. Steel reinforced opening resists abuse Cast aluminum handle Fully powder coated inside and out Durable galvanized steel for longevity Mailbox measures 21 in. x 6.61 in. x 8.8 in. Works with basic post model 7505B-10, Works with basic post with decorative cover model 7507B-10 and Works with standard post model 5525B