Constructed of heavy duty aluminum and stainless steel hardware, 3400 series high security 4C pedestal mailboxes are accessed from the front through two (2) easy opening master door panels and is an ADA height compliant unit. The durable and corrosion resistant units can be used indoors or outdoors and feature a powder coated finish. These 4C pedestal mounted mailboxes are available in sandstone, bronze, green, black, white and gray. All mailbox doors include a heavy duty cam lock with a dust/rain shield and includes three (3) keys. A compartment equivalent to two (2) 3.25 in. high standard mailbox door is used for outgoing mail collection and is labeled "Outgoing Mail". The outgoing mail compartment includes a weather protection flap and mail slot. The 4C pedestal unit include a U.S.P.S. approved 4C horizontal mailbox unit, a matching enclosure and pedestal and master commercial lock for private access. Pedestal mounted 4C horizontal mailboxes are ideal when private centralized mail delivery is desired. Ideal for colleges, schools, private postal centers, corporate mail centers, military bases, government agencies and many other applications. For U.S.P.S. delivery of mail, contact your local postmaster for approval. Salisbury Industries is an ISO 9001: 2008 certified company and has excelled in the field of manufacturing since 1936.