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Front-loading Horizontal Mailboxes – 28 Doors

Product Number: 1400-74
What you need to know before you buy.

Bulk Pricing Options Available


1-4 $2,271.00

5+ Call for price

Before You Buy:

  • Only USPS Approved for replacement purposes (replacing existing Horizontal mailboxes in same wall opening)
  • It is strongly recommended that you consult with local Postal Officials prior to ordering – Local Postmaster Approval is required
  • Approved and warranted for Indoor Use only
  • Also available for Private Mail Delivery (non-USPS)
  • Recess mounted only – 17” of wall depth is required
  • Cannot be surface mounted on a wall, pedestal mounted or free-standing








Additional Resources:

Standard configuration details & dimensions
Weight 98 lbs
Mailbox configuration 7x4
Number of mailboxes 27
Actual Unit Size
Height 38.75"
Width 27.25"
Depth 16.50"

28-Door Front-loading Horizontal Mailboxes from US Mail Supply

  • 7-high x 4-wide configuration
  • The module contains a total of 28 doors – 27 usable tenant mailboxes (5” high x 6 3/8” wide x 15 ½” deep)
  • The unit comes standard with 5-pin cam keyed mailbox locks.
  • NOTE: Any customization of this unit, including optional color, non-standard lock and/or custom configuration will require an upcharge – Call for details
  • View or download a shop drawing of this product – Please call for a shop drawing of multiple-unit side-by-side configurations

28 Door Horizontal Mailboxes for Apartments, Condos, and Office Buildings

A picture of our 28-door front-loading mailbox should have multiple entries in the dictionary under “reliable”, “durable”, and “modern”. As an indoor mail delivery solution, similar to our other 1400 series models, we see these most commonly installed in apartment complexes or in military and university residence halls. Florence mailboxes have been around for decades, as they have become the industry standard. Models like this 28-door mailbox are available as replacement units for worn-out ones. Replacement installation must follow guidelines stating it must be an STD-4C mailbox.

Once you have decided this mailbox is perfect for your residents or tenants, installation becomes the next area of concern. Our mailbox experts can walk you through, step-by-step, to answer any questions you have about your mail delivery system. Keep in mind this unit comes with a standard USPS certified lock system to ensure your mail is secure and not subject to theft.

Contact U.S. Mail Supply today if you’re curious about what having a 28-door horizontal mailbox could do for you and your professional establishment.
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.