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Are you looking for the right cluster mailbox to fit your needs? We can help! We offer a wide selection of USPS Approved CBU Mailboxes at the lowest prices for your next commercial or residential project.
What is a Cluster Mailbox?
A cluster mailbox or cluster box unit (CBU) is a free-standing, pedestal mailbox with 8, 12, 13, or 16 individually locked mailbox compartments and up to 2 integrated parcel lockers approved by the U.S. Postal Service.
Since all cluster boxes are USPS Approved mail delivery equipment, they are the most common community mailboxes on the market. (Explore Our Commercial Mailboxes) Collection. They also come in six (6) different architectural colors and can be modified to fit any community design. The colors include Sandstone (our most popular), Black, Bronze, Gray, Green, and White.
Our U.S. mail supply manufacturers equip every cluster box unit with an outgoing mail slot and one to two parcel lockers for package delivery (note: you can purchase an eight-tenant unit with up to four parcel lockers).
The Benefits of Centralized Mail Delivery
Mailbox clusters offer many benefits that can contribute significantly to your residential community. From facilitating efficient mail delivery and pickup to enhancing neighborhood security and aesthetics, these mailboxes are a smart investment for developers and community managers.
Note: While the cluster box units found on this page are pre-approved by the USPS for centralized mail delivery, customers may wonder if the same is true of 4C pedestal mailboxes.
The answer is: No.
4C pedestal mailboxes require pre-approval by the USPS before you purchase and install them if you intend to use them for USPS mail delivery. If you intend to use a 4C pedestal for private use, this should not be a concern. If you have questions about this, feel free to Call us at (866) 707-0008
Update: as of November 2020, all Florence and Salsbury mailbox manufacturers have discontinued 4C Pedestal Mailboxes. The USPS spec cluster box unit is now the industry standard for outdoor pedestal-mounted centralized mail receptacles.
Choosing the Right Cluster Mailbox for Sale (CBU)
Are you looking for the right cluster box to fit your needs? We can help! We offer a wide selection at the lowest prices to meet your next commercial or residential development project's needs. If this is your first time purchasing a cluster box unit, below is some information you may find helpful. Of course, feel free to Call us at (866) 707-0008 or open a chat window (bottom left of the site) with one of our reps if you need immediate assistance.
Colors Available:
sandstone
bronze
white
green
black
for replacement units only
gray
Options for USPS-approved Cluster Mailboxes
The Standard CBU is USPS Approved
The following cluster box units are already pre-approved by the USPS:
We also offer a 4 Door CBU Mailbox with Larger Doors (Model # 1570-4T5) and an 8 Door CBU Cluster Mailbox with Four Parcel Lockers (Model # 1570-8T6) that are also USPS approved. If you are unsure which of these options best suits your needs, feel free to call and speak to one of our product experts. They can help you find the right unit within your budget. All clustered mailboxes have an individual compartment lock for complete mail security.
The USPS Approved F-series type CBU Mailbox is available here in six different tenant door configurations and in six architectural color options from which to choose. We offer quantity pricing for two or more units in addition to other cluster box unit mailbox features (see individual product pages for details).
We always include pedestals..
You can also see a similar selection in High Security and Decorative options below.
The High-Security CBU (also USPS Approved)
While our manufacturers build the standard cluster box to prevent theft, the High-Security pedestal option can significantly reduce the risk of mail and identity theft. You can purchase vandal-proof fasteners to attach to the unit's anchor bolts for these units. The manufacturer has also designed the master front loading door to prevent prying, making it nearly impossible for mail thieves to break open the master door.
The latest industry-standard cluster box units boast a thicker, reinforced metal gate with a larger diameter hinge rod on all tenant doors.
Ideal for university mailing (and other applications), shop cluster mailbox units approved by the U.S. Postal Service. Both Florence Corp. and Salsbury Industries boast the largest cluster mailbox inventory in the United States, and we are proud to be their online suppliers. The architecturally specced sandstone cluster box units are the most popular among residential developers, HOAs, and property managers.
The Decorative CBU (also USPS Approved)
Decorative CBUs are identical to the standard units, except for the Pedestal and Cap. For Auth-Florence models, you can choose the Classic Decorative or Traditional Decorative units. For Salsbury models, you can select the Regency option. Images of these three options are displayed below. The Florence cluster box unit boasts two decorative styles. Shop Florence Mailboxes to view these styles and options.
Decorative CBU Accessories
Salsbury USPS Approved Decorative Cluster Box Unit Mailbox and OPL accessories are made of die-cast aluminum and can be ordered separately from Salsbury 3300 series CBUs and OPLs. The five (5) modern colors of decorative accessories with a long-lasting powder coating finish provide cluster box unit and OPL installations with an elegant finished appearance.
With the help of four (4) provided set screws, decorative caps may be quickly attached to the top of cluster box units and OPLs. They have a 3" diameter ball finial and a lovely sloping pattern. The decorative pedestal covers come with a plastic insect guard and installation hardware, and they are simple to put over CBU mailboxes and OPL pedestals.
Pedestal Mailboxes
Note: All manufacturers of 4C Pedestal Mailboxes have discontinued these units. They will no longer manufacture these mailboxes in the U.S. as of 11/30/2020.
The 4C Pedestal mailbox is similar to the CBU, except the 4C pedestal is not pre-approved by the USPS. These units will require USPS approval for USPS mail delivery and outgoing USPS pick-up. We strongly recommend contacting your local postmaster for approval of the 4C
Pedestal Mailbox before purchasing. Feel free to call and speak with one of our product experts if you need more information.
What to Know About Neighborhood Cluster Boxes
Newer neighborhoods and residential developments often utilize CBU mailbox installations at centralized locations. Cluster box units are convenient for the USPS and save postal carriers time. Rather than having to deliver mail to each of your neighbors, the postal carrier delivers mail to a central location.
Checking your tenant boxes may require a short walk from your house to the centralized location, or you can pick up your mail from the cluster box mailboxes on your way in or out of the neighborhood.
Shopping for neighborhood mailbox clusters? Salsbury Cluster Mailboxes ship fast.