The traditional shape of our Classic curbside mailbox is the only thing this mailbox has in common with a typical curbside mailbox. The solid cast aluminum construction, with thicker walls than our competitors, provides added strength, and the powder coated finish will maintain a lifetime of beauty. This Albion Direct Burial Mailbox Post is made of durable cast and extruded aluminum with a powder coated finish for a lifetime of beauty. 3″ outer diameter x 77″ H Fluted Post. Includes decorative floral mailbox mounting bracket and post topper.