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4 Door Apartment Mailbox


Our 4 Door apartment style mailbox available for surface mounting or recessed into a wall.  Available in 3 colors.  Optional outgoing mail slot and number placards available.



3500 Series 4B+ Vertical Mailboxes – Recessed or Surface Mounted – U.S.P.S. Access

4-Door Apartment Mailbox Overall Dimensions:  24.25″ W x 19″ H x 7.5″ D
Individual compartment size is 5-1/2″ W x 16-1/4″ H x 6-3/4″ D


  • 4B+ Vertical mailboxes are U.S.P.S. approved for replacement and/or retrofit installations
  • Manufactured to USPS-STD-4B+ Specifications
  • Ideal for apartments, condominiums and commercial buildings
  • Made entirely of aluminum
  • Feature a durable powder coated finish available in aluminum, bronze, and sandstone
  • Doors and trim are striated to resist scratching
  • Doors include a 5 pin cylinder cam lock (with 2 keys)
  • Mailboxes are available with 3 to 7 compartments (see links below)

Recessed or Surface Mounted

Surface mounted units mount on a wall or other flat surface (hardware not included). They will stick out from the front of the wall.

Recessed mounted units are designed to be fit into a rough wall opening.

Outgoing Mail Slot: (+$20.00)

An outgoing mail door with a 4-3/4” W x 1/2” H slot is available as an optional add-on. It will use the far left door of the unit.  If an outgoing mail door is requested, be sure to order a unit with one (1) compartment more than the total number of tenants receiving incoming mail.  The outgoing mail compartment will take the place of one of the incoming mail compartments.

United States Postal Service Lock

The mailbox unit will be delivered to you without the masterlock.  To have the master lock installed, you must contact your local Post Office.  They’ll set up an appointment for delivering and installing their official USPS security lock.  Only the USPS will have a key to the lock that opens the unit for mail delivery.


  • Custom engraved placards  (see links below)

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