Made of solid brass, Salsbury antique style mailboxes are handcrafted in a brass finish which provides a custom and unique look. Antique brass mail boxes are available in four (4) different styles. Models #4410 (horizontal mailboxes style) and #4420 (vertical mailboxes style) are designed for surface mounted installations. Rural mail boxes (style #4430) includes a door catch and an adjustable red signal flag and can be mounted on aluminum post #4455 (bolt mounted), aluminum post #4485 (in-ground mounted) or a base of your choice. Aluminum posts feature an antique powder coated finish. Model #4440 is designed to be recessed mounted in columns, pilasters, masonry or walls. Surface mounted and recessed mounted antique brass mail boxes may be used for your U.S.P.S. residential mail box delivery. Master postal lock not required.