Cluster Mailboxes by Salsbury Industries

Cluster Mailboxes by Salsbury Industries 

Salsbury Industries has served as an industry leader in the production of mailboxes for commercial and residential use in the United States and abroad since 1936.  

Their manufacturing facilities in Los Angeles, CA, are ISO 9001:2015 certified, General Services Administration (GSA) approved, and vertically integrated to manufacture cluster box units of the highest quality. 

We carry a wide range of USPS-approved durable mail equipment and products from Salsbury Industries to meet your needs.

Salsbury USPS Commercial and Residential Mailboxes

Salsbury Industries offers a complete line of USPS-approved commercial products for centralized mail delivery in retail centers, office complexes, apartment buildings, residential subdivisions, and other multi-tenant settings. 

3300 Series Cluster Box Units (CBU's) 

 Salsbury Industries CBU's feature heavy-duty aluminum construction with durable stainless-steel hardware and a powder coat finish to meet USPS F-specifications. Each CBU features one or two fully integrated parcel locker compartments with two easy-opening master door panels. The mailbox also has a compartment for outgoing mail that includes a weather protection flap. 

The Salsbury Industries CBU line includes the standard cluster mailbox and the Regency Decorative cluster mailbox with a decorative top and pedestal cover. This category also includes outdoor parcel lockers (OPL's) with two or four compartments and a carrier access door. 

STD-4C Mailboxes 

Salsbury Industries 4C mailboxes have a durable aluminum construction and feature horizontal doors with integrated parcel lockers. These mailboxes meet USPS-STD-4C specifications and are suitable for indoor and outdoor use with a dust rain shield. 

STD-4C units are available in rear and front-loading configurations. The tenant doors are  3" x 12" x 15". Each unit features parcel lockers for USPS package delivery with a master lock for the carrier. 

4B+ Horizontal Mailboxes 

Salsbury Industries offers 4B+ horizontal units for retrofit installations or one-on-one replacements. This category is ideal for small mail enclosures where there isn't enough wall space for a new 4C unit installation. One mailbox can have up to seven compartments and is available in three colors: bronze, sandstone, and aluminum. 

Before installing a horizontal mailbox, consult with your local postal authority.

4B+ Vertical Mailboxes 

The aluminum 4B+ units from Salsbury Industries are USPS-approved and available in front- and rear-loading configurations. Each unit features a 3/4" x 1/4" trim, and every door has a five-pin cylinder cam lock with two keys for optimal security. The 4B+ vertical units are only available for retrofit installations or one-on-one replacements. 

Private Delivery Cluster Boxes 

Private delivery boxes are ideal for any company or any other multi-recipient institution that needs a secure delivery option for non-USPS mail, paperwork, or other items. Boxes for mail delivered by a private carrier don't have to be a CBU or 4C mailbox. 

Each private delivery unit has compartments, locks, and keys for private use within an institution. Private delivery units don't meet all the USPS requirements, but they are entirely secure.