Salsbury 4C horizontal style commercial mailboxes are ideal for apartments, condominiums, office buildings, military bases and residential developments. Made entirely of aluminum, 3700 series 4C horizontal mailboxes are U.S.P.S. approved and available as front loading units or rear loading units. When for private distribution, mailboxes include master commercial lock(s).
Salsbury 4C horizontal mailboxes and parcel lockers meet the specifications of USPS-STD-4C. The 4C horizontal mailboxes are required for new construction effective October 2006. 4C horizontal mailboxes are available as pedestal mounted 3400 series, recessed mounted 3700 series, surface mounted 3800 series and free-standing 3900 series 4C horizontal mailboxes.