Made of die cast aluminum, Salsbury 4100 series surface mounted modern mailboxes include a 10" W x 2-1/2" H solid brass mail flap with the word “MAIL” cast into it. Modern mailboxes are accessed from the front through a locking 10" W x 6-1/2" H door and include a gold finish lock with two (2) keys. A gold finish non-locking thumb latch is available as an option upon request. Modern mailboxes feature a durable powder coated finish available in four (4) contemporary colors and are available in two (2) door designs (plain and eagle). Modern mailboxes may be used for U.S.P.S. residential door mail delivery.