Budget Mailboxes is proud to supply durable, secure 4B horizontal mailbox units in several configurations for replacement of your existing mailbox system.
Key notes about the USPS 4B Mailbox:
Due to a 2006 updated USPS ruling, the 4C is the current requirement for all new construction projects.
You may continue to use a 4B configuration after a renovation, provided the mailbox housing or wall opening does not change.
Our 4B horizontal mailboxes are available in multiple door sizes with various options of individual box quantities to fit your exact specifications.
Made of durable aluminum construction with stainless steel locks and hinges, these units are engineered to provide years of service.
Private use Applications
In most cases, 4B units have become designated ?private use only?, meaning they are approved for new construction only if the intended use is for a private organization such as office buildings, apartment complexes, colleges, etc.
However, if you plan to replace an existing 4B mailbox installation, these front or rear loading mailboxes allow delivery by the on-site staff (Private) or by the USPS (we strongly recommend getting USPS approval before replacing your existing units).
Collection units are also beneficial additions in private use applications. A letter collection unit is a centralized drop-box which allowing tenants to deposit outgoing mail in one secure location. You can purchase these individually or as accessories.
Standard or Custom
4B horizontal units are offered in a number of standard door configurations. You may also contact us to design a custom model, which allows you to specify door size, configuration, and quantity according to your specific needs. The flexibility of various sizes and layouts for individual needs makes the custom models an excellent choice for private delivery locations.
Standard Features
Front loading
Recess-mounted
Prepared for USPS-installed Master Lock
Anodized aluminum finish (other finishes available as customization options)
5-pin cylinder tenant cam lock with two keys (1,000 key changes)
Clear plastic number slots or engraved numbers
Snap-on outer trim kit (available by request)
Optional Features
Private master lock
3 powder coat color finishes: aluminum, Dark Bronze, and Gold Speck
Combination lock (for private services only)
Configurable door sizes and layout options
How to choose between 4B and 4C mailboxes
As previously mentioned, the USPS mandates that the 4B mailbox is no longer acceptable for new construction. These mailboxes are available only as replacement units for existing 4B applications where USPS delivery is required. For a complete list of commercial mailboxes click here.
The 4C mailbox is the most current USPS standard for all new construction applications. If the opening dimensions for the cluster housing is modified in any way, then the 4B must be upgraded to a 4C CBU. If you intend to use the 4B horizontal for USPS delivery, then we encourage you to contact your local postmaster to verify authorized use before placing your order.
Note: 4B horizontal mailbox installations should be protected from direct exposure to the weather. The manufacturer is not responsible for damage caused by weather conditions as these products are rated for indoor use only.
The United States Postal Service expanded the width of mailbox compartments and answered the demand for more secure delivery with a new standard, USPS 4C. What does this mean?
This standard replaces the traditional, cube style compartments with more flat style compartments and incorporates integrated or stand-alone parcel locker options.
A minimum of one parcel locker is required for every ten tenant compartments.
Parcel lockers are not required in installation sites with less than ten tenant compartments.
This standard requires that 4C horizontal mailboxes and parcel lockers be installed in all new construction projects and major remodels effective October 2006.
What is Standard USPS 4B+?
The demand for improved mailbox security prompted the United States Postal Service to develop this standard. Some key notes to remember:
This standard requires manufacturers to strengthen and improve the master door (arrow lock compartment) on horizontal style mail receptacles.
Our 4B horizontal mailboxes are USPS approved and in full compliance with the requirements of USPS 4B+.
These 4B+ horizontal mailboxes are approved for replacement and/or retrofit installations effective October 2006.
For new construction or major remodels (if the housing dimensions are modified), 4C horizontal mailboxes are required.