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Rear-loading Private Use Horizontal Mailboxes – 28 Doors

Product Number: 01700-74
What you need to know before you buy.

Rear-loading Private Use Horizontal Mailboxes – 28 Doors

Product Number: 01700-74
What you need to know before you buy.

Bulk Pricing Options Available


1-4 $1,445.00

5+ Call for price

Before You Buy:

    • For Private Mail Delivery only – Cannot be used for USPS Mail Delivery
    • Used for internal non-USPS mail delivery, by colleges, hospitals, dorms, large businesses, etc.
    • Rear-loading – Delivery person distributes the mail from the rear
    • Can be used for Indoor Use only – Not warranted for outdoor use
    • Recess mounted only – 17” of wall depth is required
    • Cannot be surface mounted on a wall, pedestal mounted or free-standing
**Current lead time for this product is 5-6 months to ship.








Additional Resources:

Standard configuration details & dimensions
Weight 69 lbs
Mailbox configuration 7x4
Number of mailboxes 28
Actual Unit Size
Height 38.75"
Width 17.81"
Depth 16.50"


Rear-loading Private Use Horizontal Mailboxes – 28 Doors

  • 7-high x 4-wide configuration
  • The module contains a total of 28 usable mailboxes (5” high x 4” wide x 15 ½” deep)
  • Standard units come with no rear cover and are open-backed. Locking hinged rear door equipped with a commercial master lock is available for an upcharge – Call for pricing
  • View or download a shop drawing of this product – Please call for a shop drawing of multiple-unit side-by-side configurations

Get 28 Unit Horizontal Indoor Mailboxes from US Mail Supply

US Mail Supply’s 1700 Series Rear-loading Private Use Horizontal Mailboxes are the ultimate multi-tenant, indoor mailbox solution. Keeping mail organized and accessible, apartment complexes, office buildings, and other private housing facilities greatly benefit from installing one or many of these units. Constructed with aluminum and stainless steel, these indoor mailboxes offer secure access for private use mail; and they’ll look great and match your décor as well.

Need help? Looking for a custom configuration? Contact us today or use our online mailbox design assistant.

This standard module contains 28 usable mailbox compartments in a configuration of 7 high and 4 wide, with compartments 5” high x 4” wide x 15 ½” deep. Clear Anodized Aluminum is the standard finish for this module, but with a small upcharge, you can choose from other colors and finishes that might better suit your needs. Rear loading and for private use only, this mailbox features an open back, with a locking hinged rear door available with a small upcharge.  Whether you are replacing old, damaged horizontal mailboxes, or installing indoor units in new construction, choose US Mail Supply.

Make sure to choose the RIGHT mailbox.

Don't worry, we can help you figure out what's best and most cost efficient for your space. A representative at U.S. Mail Supply will help you figure out what is required for USPS or private delivery, the number of units you need and any information required for installation.