| Quantity | Price |
|---|---|
| 2 - 5 | $1349 |
| 6+ | $1317 |
Note: This is a custom, made-to-order product. Please review our return policy before purchasing custom items.
The USPS approves 4B+ Horizontal Mailboxes for replacing existing units. For installations in new buildings, please see Cluster Mailboxes and 4C Horizontal Mailboxes.
Like many customers, you may have questions about the difference between USPS and Private Delivery. U.S. Postal Delivery is when the USPS Letter Carrier delivers mail to each existing tenant compartment in a cluster mailbox. Private delivery is when the letter carrier drops all the mail at one location and in-house personnel distributes the mail.
Due to changes in postal regulations, you may only use these older 4B horizontal mailboxes to replace a current installation of similar mailboxes without modifying the existing wall opening. However, if you do intend to modify the rough opening dimensions during a replacement or remodel, or if you plan to install for new construction, 4C mailboxes will be required.
If you need a large number of mailboxes but have limited wall space, horizontal mailboxes are an economical solution. Because these mailboxes are designed to meet specifications 30+ years old, they should only be installed indoors as they do not include the same weather resistant features or security features as the current 4C mailboxes.
Mount these horizontal mailboxes in large banks, or on multiple walls.
Multiple door size upgrades allow you to find the size that best fits your needs.

Rear-load mailboxes (1700 series) have an exposed back for easy distribution, so keep in mind during planning that additional space will be necessary for a secure room behind the installation. Access to this room may be easily restricted using a key keeper with a private lock.


A favorite of University housing managers, this indoor solution helps keep your mail area organized. Available in front-loading (1600 series) or rear-loading (1700 series) units, each module provides a lot of compartments in a small space. Since these are private delivery mailboxes, they are not constrained by postal installation regulations and therefore have no minimum or maximum mounting height requirements.
Plastic Number Slot:
Number slots are 5/8 in. H x 2 in. W.
Engraving: Custom engraving utilizes the USPS Standard US Block font and is 3/4 in. tall. All engraving can include up to 12 characters per line, two lines per door.



Door Size: All standard units contain one door size. If you need more than the standard configurations, call us at (866) 707-0008.
160073A
160074A
160075A
160076A
| Model | 160073A | 160074A | 160075A | 160076A |
|---|---|---|---|---|
| # Mailboxes (Max) | 20 | 27 | 34 | 41 |
| Actual Width | 13-3/4 in. | 17-13/16 in. | 21-7/8 in. | 25-15/16 in. |
| Rough Opening Width | 14 in. | 18-1/16 in. | 22-1/8 in. | 26-3/16 in. |
160083A
160084A
160085A
160086A
| Model | 160083A | 160084A | 160085A | 160086A |
|---|---|---|---|---|
| # Mailboxes (Max) | 23 | 31 | 39 | 47 |
| Actual Width | 13-3/4 in. | 17-13/16 in. | 21-7/8 in. | 25-15/16 in. |
| Rough Opening Width | 14 in. | 18-1/16 in. | 22-1/8 in. | 26-3/16 in. |
All standard horizontal mailbox modules shown above are also available in rear-load.
All model numbers listed are for front-load modules; change the first four numbers from 1600 to 1700 for rear-load modules and increase the max number of mailboxes by one.
160093A
160094A
160095A
160096A
| Model | 160093A | 160094A | 160095A | 160096A |
|---|---|---|---|---|
| # Mailboxes (Max) | 26 | 35 | 44 | 53 |
| Actual Width | 13-3/4 in. | 17-13/16 in. | 21-7/8 in. | 25-15/16 in. |
| Rough Opening Width | 14 in. | 18-1/16 in. | 22-1/8 in. | 26-3/16 in. |
1600113A
1600114A
1600115A
1600116A
| Model | 1600113A | 1600114A | 1600115A | 1600116A |
|---|---|---|---|---|
| # Mailboxes (Max) | 32 | 43 | 54 | 65 |
| Actual Width | 13-3/4 in. | 17-13/16 in. | 21-7/8 in. | 25-15/16 in. |
| Rough Opening Width | 14 in. | 18-1/16 in. | 22-1/8 in. | 26-3/16 in. |
All standard horizontal mailbox modules shown are also available in rear-load.
All model numbers listed are for front-load modules; change the first four numbers from 1600 to 1700 for rear-load modules and increase the max number of mailboxes by one.
1600103A
1600104A
1600105A
1600106A
| Model | 1600103A | 1600104A | 1600105A | 1600106A |
|---|---|---|---|---|
| # Mailboxes (Max) | 29 | 39 | 49 | 59 |
| Actual Width | 13-3/4 in. | 17-13/16 in. | 21-7/8 in. | 25-15/16 in. |
| Rough Opening Width | 14 in. | 18-1/16 in. | 22-1/8 in. | 26-3/16 in. |
1600123A
1600124A
1600125A
1600126A
| Model | 1600123A | 1600124A | 1600125A | 1600126A |
|---|---|---|---|---|
| # Mailboxes (Max) | 35 | 47 | 59 | 71 |
| Actual Width | 13-3/4 in. | 17-13/16 in. | 21-7/8 in. | 25-15/16 in. |
| Rough Opening Width | 14 in. | 18-1/16 in. | 22-1/8 in. | 26-3/16 in. |
All standard horizontal mailbox modules shown are also available in rear-load.
All model numbers listed are for front-load modules; change the first four numbers from 1600 to 1700 for rear-load modules and increase the max number of mailboxes by one.

Note: Horizontal mailbox installations should be protected from direct exposure to the weather; Florence is not responsible for damage caused by weather conditions as these products are rated for indoor use only.
Sometimes a standard sized compartment is simply not big enough to suit your residents' needs. That's why you can change mail compartment sizes or add as many collection and/or parcel lockers as your installation requires when you start with the custom all tenant compartment unit. These simple configurable options provide greater flexibility in door selection to ensure you can easily replace your current installation (see door size chart for options).
Cam-lock is USPS Approved and standard on all horizontal mailboxes. Lock comes with two keys (1,000 key changes). Combination lock option for Private Delivery only.



For lock maintenance,
only graphite type
lubricants are
recommended on
product locks. For
additional assistance
with locks, contact
your local locksmith.



Anodized Aluminum is standard for all horizontal mailboxes. Upgrade your installation to one of eight different architectural color options, all in a durable, powder coat finish.
Configurable units available in cabinet sizes 3 - 6 Wide and 7 - 12 High.
| Tenant Compartments | Collection Compartments | Parcel Locker Compartments | |||
|---|---|---|---|---|---|
| 1600/1700 One-High, One-Wide (5 in. H x 4 in. W) |
![]() |
|
|||
| 1603/1703 One-High, One-Wide (5 in. H x 8-1/16 in. W) |
![]() |
![]() |
|||
| 1605/1705 One-High, Two-Wide (5 in. H x 12-1/8 in. W) |
![]() |
![]() |
|||
| 1604/1704 Two-High, Two-Wide (10-3/8 in. H x 8-1/16 in. W) |
![]() |
![]() |
![]() |
||
| 1607/1707 Two-High, Three-Wide (10-3/8 in. H x 12-1/8 in. W) |
![]() |
![]() |
![]() |
| Weight | 90 lbs |
|---|---|
| Shipping Info | Usually ships in 2-4 weeks |
| Brand | Florence Mailboxes |
| Number of Mailbox Doors | 25 to 35 Mailbox Doors |
| Mount Type | Recessed |
| Material | Aluminum |
| Mailbox Type | 4B Horizontal Mailbox |
| Dimensions | Actual Height: 55 in. H / Rough Opening: 54-1/4 in. H Actual Width: 13-3/4 in. W / Rough Opening: 14 in. W |
| Security | Locking |
| Mail Capacity | Small Packages |
| Delivery Type | Private Delivery |
| Access Type | Front Loading |
| Color | Anodized Aluminum |











