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Front-loading Horizontal Mailboxes – 12 "B" Doors

Product Number: 1400-64D
What you need to know before you buy.

Bulk Pricing Options Available


1-4 $1,387.00

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 84 lbs
Mailbox configuration 6x2
Number of mailboxes 11
Actual Unit Size
Height 33.38"
Width 25.75"
Depth 16.50"

Front-loading Horizontal Mailboxes from US Mail Supply

  • 6-high x 4-wide configuration
  • The module contains a total of 12 "B" sized doors – 11 usable tenant mailboxes (5” high x 12 7/8” 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

12 Door Horizontal Mailboxes are Ideal for Apartments and Small Businesses

The best medium-sized mailbox for medium-size mail! This piece is a nice addition to any lobby or first-floor common area in a residential building. Design a welcoming space for your residents with this front-loading horizontal mailbox. Twelve ‘B’ doors help eliminate the hassle to pick up packages from a post office unable to fit in a smaller box. Give a potential resident every reason to want to buy or rent space in your building, starting with your ground floor.

The mailboxes in this unit are a little bit wider than a ruler and provide more than enough room for medium-sized packages. Custom mailbox orders can be organized and based on the direct recommendations from our mail delivery professionals, allowing us to create your dream mailbox design to help solve all of your problems. 

Contact the mailbox experts at US Mail Supply to learn how you can improve the living experience in your residential apartment building.
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.