Shop Rear-Loading Locking Cluster Mailboxes for Private Use

Locking Rear-Loading Horizontal Mailboxes for Private Mail Distribution

• Our rear-loading horizontal mailboxes feature a standard mailbox compartment size of 5” high x 4” wide x 15 ½” deep and are for private mail distribution only. Open back is standard for all units. For an additional charge, a locking hinged rear door with a commercial lock for mail delivery is available. 
• The rear-loading private horizontal cluster mailboxes are not USPS Approved. 
• Rear access for loading mail. 
• Grouped in combinations of 7, 8, 9, or 10 compartments high, and 3, 4, 5, or 6 compartments wide.
• Not for outdoor use.
• All-aluminum construction (available in standard clear anodized aluminum).
• Snap-on trim included.
• Units arrive assembled with mailbox locks included and 2 keys for each lock with 1,000 key changes. *Combination locks are available for an additional fee.
• Minimum 17” wall depth required. 
• For recess mounting only.
• Choose from either 5/8″ high engraved door identification (up to 6 characters) or clear plastic number slots.
• Standard sized tenant mailbox compartments are 5” high x 4” wide x 15 1/2” deep. Custom units are available for an additional charge. We offer a full range of mailbox sizes and configurations for outgoing mail compartments, parcel lockers and mailbox door slots.
• For shop drawings and information on rough opening and overall dimensions, please see the “Features” section of each individual product listing. 
• All rear-loading and locking private delivery cluster mailboxes are made to order and are non-returnable.

Whatever height, width and number of compartments you require for your horizontal rear-loading locking private mailboxes, we offer a full range of options to make sure one of our custom private mailboxes fits perfectly in your apartment complex, office building or college mailroom.

Shop all horizontal mailboxes for sale from U.S. Mail Supply.

Prevent Mail Theft With Locking Mailboxes from U.S. Mail Supply

US Mail Supply offers secure rear-loading mailboxes designed with a thick, durable interlocking master door to prevent compromise. These locking cluster mailboxes will keep your mail safe and secure at all times.  

Your post office must be consulted before installation due to specific placement rules. Contact us today for specific USPS Compliance, model inquiries, and other questions. Our knowledgeable staff is eager to assist you.

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Secure Rear-Loading Mailboxes Ideal for PO Box Stores and Commercial Buildings

Our rear-loading cluster mailboxes are designed for all private mailbox stores, PO Box stores, apartment buildings, universities, residential areas, and other private-use commercial applications that require internal mail delivery and distribution. Call our expert customer service staff and we will guide you through our mailroom furniture products to select the best mailbox for your business. 

Shop all locking mailboxes from U.S. Mail Supply or call (262) 782-6510 for more details on your order.

FAQs About Rear-Loading Locking Cluster Mailboxes for Private Use

Can I use locking cluster mailboxes for my private mailbox store?

Yes, locking cluster mailboxes from US Mail Supply are ideal mailbox units for private PO box stores and mailbox stores.

Are rear-loading cluster mailboxes from US Mail Supply USPS Approved?

Rear-loading cluster mailboxes from US Mail Supply are not USPS Approved. These mailbox units are designed for internal mail distribution in commercial buildings including private mailbox stores, PO box stores, universities, apartments, and other private-use settings.

What are the advantages of a rear-loading configuration for private cluster mailboxes?

Rear-loading private cluster mailboxes have a single, easy-to-use access point at the back of the unit for quick and efficient loading.