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Shop 1400 Series 4B+ Front-Loading Horizontal Mailboxes

The 1400 series 4B+ mailboxes are front-loading horizontal mailboxes perfect for multi-unit buildings. Your tenants’ mail will be keep safe and secure in these heavy-gauge aluminum mailboxes customizable to your unique needs.

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USPS Mailboxes

Subject to local regulations and installation requirements, our products can comply with USPS standards, as defined by the Postmaster General.

Please note that the USPS periodically updates mailbox standards and guidelines. Before proceeding with mailbox projects, we recommend you consult with your local Postmaster to comply with your specific area guidelines. US Mail Supply experts are standing by to help you navigate the product selection and installation process.