Salsbury 4600 Series Decorative Traditional Mailboxes may be used for U. S. P. S. residential door mail delivery. Made of electro-galvanized 20 gauge steel. Include 5" detachable magazine hooks. Feature a durable powder coated finish available in black, green, beige and white are Salsbury Industries is an ISO 9001: 2008 certified company and has excelled in the field of manufacturing since 1936.