Cluster Box Unit FAQs:
- Are There Requirements for Cluster Mailbox Units?
- Can CBUs Be Customized?
- How are Cluster Mailbox Units Installed?
- What are Cluster Mailbox Units and How Do They Work?
- What is the Cost of Cluster Mailbox Units?
- Why Should I Invest In Cluster Mailbox Units?
CBU Feature and Maintenance Videos:
Watch informative videos that will help you understand the full potential of cluster box units. Whether for commercial or residential use, CBUs are so versatile for any property.
- CBU Mailbox Features: Security & Protection
- CBU Mailbox Features: Built-in Parcel Locker
- CBU Mailbox Features: Outgoing Mail Convenience
- How to Install a Cluster Box Unit
- Cluster Box Units (CBUs) Overview
- Changing/Replacing Tenant Door for CBU & 4C Mailboxes
Classic Decorative Style Cluster Box Units (CBUs) from National Mailboxes combine elegant aesthetics with robust security features, offering a stylish solution for multi-tenant mail delivery. These high-quality commercial mailboxes, part of the NEW F-Series Type, are USPS Approved and Postal Certified, designed to meet or exceed the latest USPS Security Standards while adding a touch of sophistication to any property.
Key Features:
- Elegant, decorative design that enhances property aesthetics
- Constructed entirely of heavy-duty extruded aluminum with stainless steel components and hinges
- Front-loading design for convenient access
- Available in various configurations to suit different property sizes
- Includes individually-locked tenant compartments with keys
- Features parcel locker compartments for secure package delivery
- Incorporates outgoing mail compartments
- Comes complete with pedestal stands for easy installation
- Offered in a wide selection of durable powder-coated finish colors
These Classic Decorative CBUs combine enhanced security features with an attractive appearance, ensuring both the safety of residents’ mail and packages and the visual appeal of the property. The robust construction and high-quality materials contribute to the units’ longevity and resistance to tampering, while the decorative elements add a touch of class to the overall design.
The F-Series Classic Decorative CBUs offer flexibility in installation, with options for both pedestal mounting and wall mounting, depending on site requirements and aesthetic preferences. Each unit is designed to comply with USPS regulations, making them ideal for use in upscale apartments, condominiums, office complexes, and other multi-tenant properties where appearance is as important as functionality.
For property managers and owners looking to enhance their property’s curb appeal while providing secure mail services, these Classic Decorative CBUs offer an attractive, low-maintenance, centralized mail management solution. Optional private master locks for private use or private access delivery are available upon request, adding an extra layer of customization and security.
To learn more about choosing the right Classic Decorative CBU for your property, installation guidelines, maintenance tips, and detailed specifications of each configuration, please refer to our comprehensive CBU Buyer’s Guide.



The Classic Decorative Style High Security F-Series Cluster Box Units (CBU) from National Mailboxes are designed to meet or exceed the new USPS Security Standards. They are made entirely of heavy duty extruded aluminum along with all stainless steel components and hinges. These high quality cluster mailboxes are front loading style and include all tenant door locks and keys. Parcel locker compartments for packages, outgoing mail compartments for outgoing mail, and pedestal stands are also included. All CBU mailboxes are offered and available in a wide selection of protective and durable powder coated finish colors. Optional private master locks for private use or private access delivery are also available upon request. 























