Apartment Mailboxes | USPS Approved
Showing 28–32 of 32 results
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Standard Replacement Lock for Salsb Brand Vertical Mailbox Tenant Door (5 Pack with 2 Keys per Lock) – H3590-5
Wholesale Pricing:
$89.95 Add to cart -

Private Master Lock Conversion Kit for Commercial Mailbox Unit (Converting from Postal to Private) For Private Use/Access Only (Florence Brand) – H206550
Wholesale Pricing:
$99.95 Add to cart -

Key Blanks 25-Pack for Vertical/Apartment Mailboxes (Florence Brand) – H1111-115
Wholesale Pricing:
$71.95 Add to cart -

Key Blanks for Standard Tenant Locks of Salsb Brand Vertical Mailboxes (Box of 50) – H3599
Wholesale Pricing:
$58.95 Add to cart -

Surface Mount Collar Enclosure for Vertical Mailboxes (Florence Brand) – HSMS125A
Wholesale Pricing:
$198.50 View Options
Showing 28–32 of 32 results
Product Line Features
- USPS Approved for Replacement of Existing Wall Mounted Mailboxes
- Front Loading Style
- Recessed In-Wall Mount Style or Surface Wall Mount Style Available
- Tenant Compartment Size: 5-1/2″W x 16″H x 6″D
- Doors come with Standard Number Slots for Door Identification
- Constructed and Manufactured of Heavy Duty Extruded Aluminum
- Includes USPS 4B+ Security Upgrade Kit
- Standard Finish Color: Anodized Aluminum
- Wide Selection of Other Powder Coated Finish Colors are Available
- Email or Call Our Customer Support Department for Frequent FREE Shipping/Freight Promotions
Color Finishes Available: Anodized Aluminum, Dark Bronze, and Sandstone
Types
Vertical Mailboxes
Vertical mailboxes are a practical choice for smaller apartment complexes, featuring three to seven standard USPS slots. Designed for security, these mailboxes are equipped with tamper-resistant locks and can be either surface-mounted or recessed for a sleek look. Enhance your mailbox with our customizable engraved address tags.
CBU Cluster Box Units
Our USPS-approved Cluster Box Units (CBUs) are designed for convenience, offering eight to sixteen secure mail compartments. Mounted on a pedestal, these mailboxes feature a Postal Master lock for efficient USPS mail delivery. CBUs also include parcel lockers, collection boxes, and key keepers, making them perfect for centralized mail delivery, whether indoors or outdoors.
4C Mailboxes
4C mailboxes are essential for both private and USPS mail delivery, as mandated by USPS for all new commercial developments with central delivery systems. These modular mailboxes are customizable to suit any project’s specifications and come equipped with parcel lockers, drop boxes, and collection boxes to meet all your mailing needs.
Centralized Mailboxes for Private Delivery
Not all mailbox types are approved for USPS delivery. Some centralized mailboxes do not meet the USPS 4C requirements, and therefore can only be used for private delivery, where an employee of a property receives mail from the USPS or another carrier and deposits it in each resident mailbox or parcel locker.
What’s The Most Popular Choice?
Cluster mailboxes are handy, attractive stand-alone units perfect for installing in a central location. Better yet, they come already approved by the USPS and installation is easy and simple. Cluster mailboxes consist of a single unit with a varying number of doors and possible storage lockers for large deliveries. Overall, this is the most cost-effective option for residential mail delivery, with the lowest cost per door.
For Lobbies and Kiosks: The 4C Horizontal Mailbox. In some areas, mailboxes must be installed in an indoor lobby or in outdoor kiosks. Unless you’re replacing older 4B horizontal or vertical mailboxes (see below), the 4C Horizontal will be the best choice.
Apartment Mailbox Comparison Chart
| Mailbox Type | Installation Type | USPS Requirement | Best Use Case |
|---|---|---|---|
| CBU (Cluster Box Units) | Pedestal mounted on a concrete pad | USPS Approved for all new construction | Outdoor centralized mail delivery for apartments or residential neighborhoods |
| 4C Horizontal Mailboxes | Recessed into a wall or surface mounted | Mandatory for all new multifamily construction and major renovations | Indoor lobbies or outdoor kiosks with high security and high volume needs |
| Vertical Mailboxes | Recessed or surface mounted on a wall | Approved for replacement of existing units only | Small apartment buildings or older renovations where wall space is limited |























