Salsbury 4 Door High Security Outdoor Parcel Locker (OPL) Mailbox - 3304

Salsbury 4 Door High Security Outdoor Parcel Locker (OPL) Mailbox - 3304

Salsbury 3300 Series Cluster Box Units (CBU's) - USPS Access

Cluster Box Units (CBU’s) manufactured by Salsbury Industries provide USPS access and offer a secure means of receiving mail and packages. They are ideal for commercial use or residential applications such as housing developments, apartments or townhouses. The 3300 Series is a USPS accessible CBU that includes a matching pedestal. Our cluster mailboxes are an excellent choice for durability because they are constructed of heavy-duty aluminum and stainless steel. See the additional features of our CBU’s below.


  • * 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), "B" size doors (12-3/4" W x 4-7/8" H) and "C" size doors (12-3/4" W x 6-3/4" 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, 2 or 4 fully integrated parcel locker(s): Small (12" W x 10" H) and Medium (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



Cluster Box Unit (CBU) Video

Installation Video – Installing Cluster Box Units

Installation Video – Tenant Lock Replacement

Installation Video – Tenant Door Replacement

Installation Video – Locating Tenant Keys

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  • Brand: Salsbury
  • Product Code: 3304
  • Availability: In Stock
  • $3,230.00
  • 3 or more $3,312.00
  • 6 or more $3,208.50

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Tags: Salsbury 4 Door High Security Outdoor Parcel Locker (OPL) Mailbox - 3304, Parcel Lockers