Vertical Residential &
Commercial Mailboxes
Front Loading commercial USPS STD-4C Horizontal mailbox systems are perfect for apartments, offices, and multi-tenant buildings serviced by the U.S. Postal Service. The standard features on these locking mailboxes are designed to provide users with a secure mailbox solution. PLEASE NOTE: The USPS requires that all multi-family new construction and major renovations utilize 4C horizontal mailboxes