Apartment Mailboxes | USPS Approved
Apartment mailboxes are built for centralized mail delivery in multi-unit buildings. Whether you’re replacing older boxes or planning a new installation, choosing the right system comes down to compliance, durability, and ease of access for both tenants and carriers.
Our mailbox units are designed for indoor/outdoor use and meet USPS requirements for replacement projects. For new construction or major renovations, USPS regulations require STD-4C compliant systems, which include parcel lockers and specific sizing and placement guidelines. Learn More
For more product info contact the National Mailboxes Customer Support Center at 1-800-676-5161
Multi-Unit Apartment Mailboxes | USPS Approved for Replacement
Showing 1–27 of 32 results
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3 Door Standard Vertical Mailbox Unit with Anodized Aluminum/Silver Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H12503A
Sale! Wholesale Pricing:
Original price was: $372.50.$347.50Current price is: $347.50. View Options -
4 Door Standard Vertical Mailbox Unit with Anodized Aluminum/Silver Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H12504A
Sale! Wholesale Pricing:
Original price was: $492.50.$467.50Current price is: $467.50. View Options -
5 Door Standard Vertical Mailbox Unit with Anodized Aluminum/Silver Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H12505A
Sale! Wholesale Pricing:
Original price was: $637.50.$587.50Current price is: $587.50. View Options -
6 Door Standard Vertical Mailbox Unit with Anodized Aluminum/Silver Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H12506A
Sale! Wholesale Pricing:
Original price was: $747.50.$697.50Current price is: $697.50. View Options -
7 Door Standard Vertical Mailbox Unit with Anodized Aluminum/Silver Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H12507A
Sale! Wholesale Pricing:
Original price was: $867.50.$817.50Current price is: $817.50. View Options -
Standard Size Vertical Collection Letter Box with Anodized Aluminum/Silver Finish (Recessed Wall Mount) – H120R
Sale! Wholesale Pricing:
Original price was: $322.50.$297.50Current price is: $297.50. View Options -
Standard Size Vertical Collection Letter Box with Anodized Aluminum/Silver Finish (Surface Wall Mount) – H120SMS
Sale! Wholesale Pricing:
Original price was: $442.50.$417.50Current price is: $417.50. View Options -
4 Large Tenant Door Standard Style High Security CBU Mailbox with 2 Parcel Lockers (Pedestal Included) – Type 5 USPS Approved – H1570-4T5AF
Sale! Wholesale Pricing:
Original price was: $2,713.50.$2,472.00Current price is: $2,472.00. View Options -
3 Door Standard Vertical Mailbox Unit with Powder Coated Color Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H3503
Sale! Wholesale Pricing:
Original price was: $401.50.$376.50Current price is: $376.50. View Options -
4 Door Standard Vertical Mailbox Unit with Powder Coated Color Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H3504
Sale! Wholesale Pricing:
Original price was: $552.50.$502.50Current price is: $502.50. View Options -
5 Door Standard Vertical Mailbox Unit with Powder Coated Color Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H3505
Sale! Wholesale Pricing:
Original price was: $678.50.$628.50Current price is: $628.50. View Options -
6 Door Standard Vertical Mailbox Unit with Powder Coated Color Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H3506
Sale! Wholesale Pricing:
Original price was: $804.50.$754.50Current price is: $754.50. View Options -
7 Door Standard Vertical Mailbox Unit with Powder Coated Color Finish (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H3507
Sale! Wholesale Pricing:
Original price was: $930.50.$880.50Current price is: $880.50. View Options -
Standard Size Vertical Collection Letter Box with Powder Coated Color Finish (Recessed Wall Mount) – H2245
Sale! Wholesale Pricing:
Original price was: $398.50.$373.50Current price is: $373.50. View Options -
Standard Size Vertical Collection Letter Box with Powder Coated Color Finish (Surface Wall Mount) – H2240
Sale! Wholesale Pricing:
Original price was: $398.50.$373.50Current price is: $373.50. View Options -
8 Tenant Door Standard Style High Security CBU Mailbox with 2 Parcel Lockers (Pedestal Included) – Type 1 USPS Approved – H1570-8AF
Sale! Wholesale Pricing:
Original price was: $2,626.50.$2,434.00Current price is: $2,434.00. View Options -
8 Tenant Door Standard Style High Security CBU Mailbox with 4 Parcel Lockers (Pedestal Included) Type 6 USPS Approved – H1570-8T6AF
Sale! Wholesale Pricing:
Original price was: $3,112.50.$2,680.00Current price is: $2,680.00. View Options -
12 Tenant Door Standard Style High Security CBU Mailbox with 1 Parcel Locker (Pedestal Included) – Type 2 USPS Approved – H1570-12AF
Sale! Wholesale Pricing:
Original price was: $2,723.50.$2,472.00Current price is: $2,472.00. View Options -
13 Oversized Tenant Door Standard Style High Security CBU Mailbox with 1 Parcel Locker (Pedestal Included) – Type 4 USPS Approved – H1570-13AF
Sale! Wholesale Pricing:
Original price was: $2,820.50.$2,541.00Current price is: $2,541.00. View Options -
16 Tenant Door Standard Style High Security CBU Mailbox with 2 Parcel Lockers (Pedestal Included) – Type 3 USPS Approved – H1570-16AF
Sale! Wholesale Pricing:
Original price was: $2,869.50.$2,563.00Current price is: $2,563.00. View Options -
2 Large Door Pedestal Style High Security Outdoor Parcel Locker (Pedestal Included) USPS Approved for Packages Only – H1590-T1AF
Sale! Wholesale Pricing:
Original price was: $2,551.50.$2,161.00Current price is: $2,161.00. View Options -
4 Large Door Pedestal Style High Security Outdoor Parcel Locker (Pedestal Included) USPS Approved for Packages Only – H1590-T2AF
Sale! Wholesale Pricing:
Original price was: $3,910.50.$3,242.00Current price is: $3,242.00. View Options -
Florence Replacement Tenant Door with Lock for Vertical Mailboxes – HK40300L
Wholesale Pricing:
$59.95 Add to cart -
Salsb Replacement Tenant Door with Lock for Vertical Mailboxes – H3551
Wholesale Pricing:
$54.95 View Options -
Vertical Mailbox Outgoing Mail Slot (Salsb Brand) – H3569
Wholesale Pricing:
$24.95 Add to cart -
Replacement Vertical Postal Master Access Door for Standard Vertical Mailbox (Florence Brand) USPS furnishes/installs postal lock – HK40100
Wholesale Pricing:
$59.95 Add to cart -
Replacement Mailbox Tenant Locks 2-Pack – For Vertical & Horizontal Mailboxes (Florence Brand) – HK30809
Wholesale Pricing:
$39.95 Add to cart
Showing 1–27 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 |
