0 items in cart Cluster Box Units (CBU's) Horiztonal Mailboxes Vertical Mailboxes Parcel Lockers Aluminum Mailboxes Data Distribution Boxes Brass Style Mailboxes Free Standing Mail Centers Drop Boxes Postal Specialties   Home > Commercial Mailboxes > Horizontal Mailboxes e-mail this page   printable view         4C Standard Horizontal Mailboxes - High Security 4C Custom Horizontal Mailboxes - High Security   4B+ Standard Horizontal Mailboxes 4B+ Custom Horizontal Mailboxes Salsbury Industries’ horizontal style commercial mailboxes are ideal for apartments, condominiums, office buildings, schools, private postal centers, corporate mail centers, military bases and residential developments. Made entirely of aluminum, 3700 series 4C horizontal mailboxes and 3600 series 4B+ horizontal mailboxes are U.S.P.S. approved and available as front loading units or rear loading units. The 3700 series 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. The 3600 series 4B+ horizontal mailboxes have been U.S.P.S. approved to the required security upgrades of USPS-STD-4B+. 4B+ horizontal mailboxes are approved for replacement and/or retrofit installations effective October 2006. If you are having trouble finding a suitable mailbox system for your needs, please feel free to contact one of our customer service representatives.   Commercial Mailboxes | Residential Mailboxes | Lockers | Signage Home     Site Map     FAQ's     Terms & Conditions     Privacy Policy      © 2008 Salsbury Industries. All Rights Reserved.