The Berkshire Curbside Mailbox presents an impressive face. The one piece cast aluminum door features deeply cut details with a rich, leather grain textured panel. The stainless steel spring hinge and magnetic catch will keep the door secure and the rust proof cast aluminum body construction creates a weather resistant mailbox. The Tacoma surface mount mailbox post is made of cast aluminum. Post dimensions are 42" H x 9" Dia. Base. Surface Mount installation is required.This mailbox combination also includes an easy to install locking insert, to help protect from identity theft. Manufactured from rust free powder coated aluminum, the Lock Box firmly attaches to the bottom of the mailbox and cannot be removed without the key. The Lock Box insert is easly installed with four screws (included). Consult your local postmaster regarding regulations governing the installation of locking inserts.