4B Horizontal Mailboxes for Sale

Are you interested in new horizontal mailboxes for your office buildings or non-commercial mail needs? If so, you may want to consider USPS-approved 4B horizontal mailboxes. At Mailbox Depot USA, we offer a wide selection of USPS-approved horizontal mailboxes to meet your personal mail needs.

What Are 4B Horizontal Mailboxes?

4B mailboxes are clustered, wall-mounted units that contain multiple parcel lockers. Your local postmaster from USPS can handle installation and master lock upkeep for secure mail delivery.

4B horizontal mailboxes are outdated USPS mail systems for commercial use. 

The most up-to-date requirement is the 4C horizontal mailbox. However, you may still purchase a 4B system for older non-renovated properties or personal use.

4B Horizontal Mailboxes: Approved Uses

You may only use 4B mailboxes for replacement use cases. Your local post office requires 4C systems for major renovations or new construction. If you plan to replace your mail system without completing renovations or want mailboxes in a non-commercial setting, like a small office, college, or apartment complex, you may still use approved 4B mailboxes.

4B Horizontal Mailboxes: Features

Our 4B mailboxes come with standard features for enhanced style, security, and usability. We recommend considering the features below when selecting your USPS mail system.

Engraved Numbers or Clear Plastic Number Slots

The door on each parcel locker will include either engraved numbers or plastic number slots depicting which resident or occupant may use each locker. You may select whichever option you prefer.

Front- or Rear-loading Mailboxes

Front-loading mailboxes include a USPS-installed master lock. After installation, the carrier may use this lock to open the entire unit from the front to access all parcels.

Rear-loading systems include a back-door mechanism that leads to a secure mail room. The USPS carrier may enter the mail room to access each parcel.

We recommend reviewing your building’s construction options when considering front- or rear-loading configurations. Both options offer durability and security.

Stylistic Finishes

Especially with indoor use, you want the mailboxes to match the style of your building. You can select anodized aluminum finishes in a variety of colors so the boxes blend seamlessly into the rest of your property’s style. A few options include bronze, black, gold speck, and more.

Ample Security for Private Mail Delivery

Your mailboxes must have adequate security to prevent mail theft and vandalism. 4B systems come with five-pin cylinder tenant cam locks, optional combination locks for private services, and durable adonized metal. With such included features, you may rely on them for indoor and outdoor uses.

Shop 4B and 4C Horizontal Mailboxes From Mailbox Depot USA

Shop online for 4B replacement mailboxes for residential buildings, apartment complexes, commercial and military facilities, university dorms, financial institutions, medical organizations, and other centralized mail facilities with Mailbox Depot USA. If you’re completing a major renovation or new construction project, we also offer 4C options that comply with the most updated USPS requirements.

Shop online for 4C and 4B mailboxes from Mailbox Depot USA today, or contact us to learn more.