4B+ Horizontal & Vertical Mailboxes – Secure, Durable & USPS-Compliant Solutions

Upgrade your mail system with 4B+ horizontal mailboxes, designed for both USPS-approved and private mail delivery. These durable, heavy-duty aluminum mailboxes provide a secure and efficient solution for apartment buildings, office complexes, and commercial properties.

USPS-Approved 4B+ Mailboxes

Our USPS-compliant 4B+ mailboxes meet updated postal regulations and are ideal for replacing older mail systems in existing buildings. Featuring durable aluminum construction, secure tenant compartments, and front-loading or rear-loading options, these mailboxes offer a practical and long-lasting mail delivery solution.

Private 4B+ Mailboxes

For internal mail distribution, our private-use 4B+ mailboxes provide the same quality and security but are designed for non-USPS mail handling. Perfect for corporate offices, university campuses, and military bases, these mailboxes ensure safe and organized mail storage.

Key Features:

✔ Heavy-duty aluminum construction for long-term durability
✔ Multiple tenant compartments for efficient mail organization
✔ Optional security upgrades like key locks, combination locks, and postal access doors
✔ Front- and rear-loading configurations to fit various installation needs
✔ USPS-approved and private-use options available

Find the perfect 4B+ mailbox system to enhance your building’s mail security and functionality today!