Pre-approved by the USPS, cluster mailboxes are considered the industry standard when it comes to outdoor, centralized mail delivery.
If you are involved in a new construction development, you have probably already consulted or will consult with your local postmaster regarding the placement (location) of your CBU. If not, we recommend it.
After installing the CBU, follow-up with your local post office and the USPS will install their master lock for the main access door. Note: the USPS provides the master lock and only they have the keys to it.

Obsolete: NDCBUs are no longer permitted for replacement or new installations

New CBUs accommodate both mail and packages while providing greater security.
Developed and approved by the USPS in 2005, the new cluster box unit specification (right image) became the standard for all manufacturers and replaces both the outdated Neighborhood Delivery Collection Box Unit (NDCBU) and the "E" series CBU.
While the original NDCBU introduced convenience for residents and letter carriers alike, it is no longer permitted for replacement or new installations. These outdated units fall into disrepair as they age and are, in many cases, quite dilapidated. The newer 2005 specifications boast a thoroughly tested design that provides better security and durability over time.
If you need anchor bolts for your CBU installation, add them from the dropdown options above the Add to Cart button.
Answer: The CBU anchor bolts, nuts, and/or vandal proof nuts for pedestal installation are specifically for installations where new concrete is being poured.
*Note: actual measurements between bolts should be confirmed prior to installation. BudgetMailboxes.com is not liable for faulty installation due to inaccurate measurements.
The 12-Door CBU includes one (1) fully integrated parcel lockers and a matching pedestal. One additional compartment is labeled "Outgoing Mail" and includes a weather protection flap and an 12 in. W x 3 in. H mail slot.
The CBU also features individually numbered mail compartments and a mail carrier access door for USPS provided master arrow lock.The unit itself is constructed of high-grade, heavy-duty, aircraft aluminum while the hardware is constructed of stainless steel. All CBUs on BudgetMailboxes.com are manufactured here in the USA.
Auth-Florence Manufacturing vital 1570 Cluster Box Unit
The Florence vital 1570 series cluster box unit has been adopted by the USPS as the design standard for all CBUs manufactured in the United States. Auth-Florence offers a complete line of cluster box units to fit your individual project requirements, offering you the same security and reliability that the USPS depends on every day. Auth-Florence holds the sole honor of being the only USPS supplier of Commercial Mailboxes.
The 4 Door CBU Mailbox with Extra Large Tenant Doors is designed for residential and commercial developments as well as for businesses. It makes use of four (4) large mail slots for that extra room retailers and other commercial businesses need for their incoming and outgoing post, as well as two (2) large parcel lockers to securely hold package deliveries.
Made of non-corrosive, heavy metal, the 4-Door Cluster Mailbox with 2 parcel lockers comes in neutral sandstone, and keeps your mail safe from intruders and the elements. It was built to USPS specifications and is pre-approved by the postal service for outdoor centralized delivery.
Standard Features:
Finish or Material:
Heavy duty aluminum and stainless steel construction with an attractive powder coat finish.
Loading and Mounting:
Front loading, pedestal mounted CBU mailbox includes a carrier access door prepared for a USPS arrow lock (installed by local postal officials) for delivery/service to mailbox.
Tenant Doors:
Tenant doors include heavy duty, dustproof cam locks each with 3 keys.
Parcel Lockers:
Includes Parcel locker door(s) - a means of USPS package delivery. Dual, captive locking system allows USPS to deliver a package to the locker leaving the key in the tenant's mailbox. Package is retrieved by the tenant and key is retained securely in the lock for the Postal Service to retrieve and reuse for the next package delivery.
Outgoing Mail:
Outgoing mail compartment with slot, anti-fish comb for security, and protective hood is located above USPS access door for convenient outgoing mail collection.
Door Identification:
Attractive silver placards with black numbers 1 thru 4, 1P, 2P are included for door identification.
Optional Features:
**CUSTOM COLORS AND DOOR IDs MAY ADD 10-15 DAYS TO LEAD TIME**
Powder Coat Colors:
Model Specifications:
| Weight | 145 lbs |
|---|---|
| Shipping Info | Standard: usually ships in 3 days Custom: usually ships in 1-1.5 weeks |
| Brand | Florence Mailboxes |
| Number of Parcel Lockers | 2 Parcel Lockers |
| Number of Mailbox Doors | 4 Mailbox Doors |
| Mount Type | Pedestal Mount |
| Material | Aluminum |
| Mailbox Type | Cluster Mailbox |
| Dimensions | 62 in. H x 30-1/2 in. W x 18 in. D |
| Security | Locking |
| Number of Tenants | 4 |
| Mail Capacity | Large Packages |
| Included Accessories | Includes Pedestal |
| Delivery Type | USPS Delivery |
| Access Type | Front Loading |
| Height | 62" |
| Width | 30-1/2" |
| Depth | 18" |











