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Salsbury Roadside Mailbox - Black

Model # 4325BLK
usually ships within 1-2 days

$225.00 $202.50

Free Freight on all orders in June!

Volume Discounts

2 - 5$185.00
6 +$175.00
Contact Us for Bulk Pricing
12.5" W x 13.625" H x 18.25" D
25 lbs

Salsbury Industries is officially licensed by the US Postal Service to manufacture Cluster Box Units (CBU’s). Cluster Mailboxes are ideal for centralized mail delivery.


More Information

Salsbury 4300 Series Roadside Mailboxes


  • Mailboxes are U.S.P.S. approved
  • Manufactured by Salsbury Industries to USPS-STD-7B specifications
  • Made entirely of aluminum
  • Feature both a front and rear access locking door
  • Include a lock with 2 keys on each door (keyed alike)
  • Feature a durable powder coated finish available in black, bronze, silver and white
  • Includes an adjustable red signal flag
  • Mail is deposited through a non-locking access panel on the front and includes an outgoing tray
  • Mailboxes can be mounted on posts and in columns, masonry or walls
  • Salsbury Industries is an ISO 9001:2015 certified company and has excelled in the field of manufacturing since 1936


  • Bolt mounted or in-ground mounted standard pedestal or deluxe post
  • Multiple roadside mailboxes can be mounted on the 2-sided deluxe post and on the standard pedestal using spreaders
  • Custom engraved placards
  • Custom vinyl numbers / letters
  • Non-locking thumb latches
  • Replacement red signal flag



  • Deluxe Roadside Mailbox Video