Commercial mailboxes

mailbox mb-3308

Mailbox 3308

Commercial mailboxes / Cluster Box Units (CBU’s) – USPS access.

mailbox mb-3308R

Mailbox 3308R

Commercial mailboxes / Cluster Box Units (CBU’s) – USPS access.

Call us at 770-451-3777

About mailboxes 3308/3308R – Cluster Box Units (CBU) USPS


  • Salsbury Industries is officially licensed and authorized by the U.S. Postal Service to manufacture Cluster Box Units (CBU’s)
  • Manufactured by Salsbury Industries to U.S.P.S. “F” Specifications
  • License # 1CDSEQ-08-B-0026
  • Ideal for commercial and residential developments
  • Include matching pedestal
  • Constructed of heavy duty aluminum and stainless steel hardware
  • Feature a durable powder coated finish available in sandstone, bronze, green, black, white and gray (for replacement units only)
  • Accessed from the front through 2 easy opening master door panels
  • Available in “A” size doors (12-3/4″ W x 3-1/8″ H) and larger “B” size doors (12-3/4″ W x 4-7/8″ H)
  • Doors include a heavy duty 5 pin cylinder cam lock with a dust/rain shield and 3 keys
  • One compartment is labeled “Outgoing Mail” and includes a weather protection flap and an 11-3/4″ W x 3/4″ H mail slot
  • Include a carrier access door for U.S.P.S. installed master lock
  • Include 1 or 2 fully integrated parcel locker(s): Small (12″ W x 10″ H) and Large (12″ W x 13-1/2″ H)
  • Salsbury Industries is an ISO 9001:2015 certified company and has excelled in the field of manufacturing since 1936


  • Custom engraved placards
  • Custom engraved doors – regular
  • Custom engraved doors – black filled
  • Replacement locks
  • Additional keys
  • Key blanks
  • Regency CBU decorative top
  • Regency CBU decorative pedestal cover

Call us at 770-451-3777