Standard Horizontal Wall Mount Mailboxes
USPS Approved for Replacement Only
Standard Horizontal Mailboxes from National Mailboxes are available in both front loading and rear loading styles and are manufactured from heavy duty aircraft aluminum. These high quality horizontal mailbox units are recessed in-wall mounted style and fully recess into the wall. They are USPS Approved for replacement only although local post office approval is still required. Tenant door locks and keys are included along with standard protective aluminum/silver color finish. Special dark bronze and sandstone color finishes are also available on select models. The postal master locks are furnished by USPS and optional private master locks are available if using/needing for private party use/access mail applications. Learn More
For more product info contact the National Mailboxes Customer Support Center at 1-800-676-5161

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Front-Loading Type Standard Horizontal Mailboxes (36)
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Rear Loading Type Standard Horizontal Mailboxes (Wall Mount) - USPS Approved for Replacement Only (24)
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Standard Horizontal Mailbox Accessories & Replacement Parts (16)
What Our Clients Are Saying
★★★★★ “National Mailboxes is one of the best in the business. From reliable products to convenient customer service and competitive pricing. National Mailboxes has been my go-to provider for all my mailbox needs and I recommend them to all of my friends.” – Ram S. (Elmhurst, NY)
Product Line Features:
- FREE Shipping/Freight (Via Truck) Promotional This Month – Expires Month End
- Front Loading and Rear Loading Styles Available
- USPS Approved for Replacement of Existing Wall Mounted Mailboxes
- Recessed, In-Wall Mount Type
- Includes USPS 4B+ Security Upgrade Kit
- Tenant Door Size: 5″H x 6-3/8″W x 16″D
- Tenant Locks and Keys are Included (Includes 2 Keys per Door or per Lock)
- Constructed and Manufactured of Heavy Duty Extruded Aluminum
- Standard Number Slots for Door Identification Included (Optional Door Engraving also Available)
High-quality Standard Horizontal Mailboxes made in the USA
Durable, Secure, and USPS Approved
Our standard horizontal mailboxes are constructed from heavy-duty aluminum and feature a powder-coated finish for enhanced durability and corrosion resistance. Each unit is USPS-approved, providing a safe and compliant solution for centralized mail delivery in apartments, office buildings, and other multi-tenant commercial properties.
Customizable Options for Every Property
Available in multiple configurations, our standard horizontal mailboxes can be created to meet your specific needs. Choose from a variety of door sizes, colors, and optional features like custom numbering to ensure a perfect fit for your property.
Front and Rear Loading Options
We offer versatile front and rear loading mailboxes to meet the unique needs of your property. With front-loading units, mail carriers can conveniently deposit mail directly from the front, while rear-loading mailboxes allow for secure access from the back—ideal for locations with restricted front access or dedicated mailrooms.
Both options are designed with durability, security, and user convenience in mind, featuring heavy-duty construction and tamper-resistant locks.
This horizontal mailboxes can also be used for private party access and distribution
![]() Custom 35-Door Horizontal Mailbox Unit which can be modified/customized with different select door size configurations (Local Postmaster Approval Required if for USPS Use/Access) |
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For Higher Quantities, call Customer Service for Special Discount Pricing.

10 Questions To Answer Before We Can Prepare A Quotation For You:
- Do you want the USPS to deliver mail directly to the mailboxes or do you want a private individual to distribute the mail?
- Do you prefer front loading or rear loading style?
- What finish type do you prefer? (Standard: Anodized Clear Aluminum Finish)
- How many tenants do you want to service or how many useable doors do you need?
- Do any or all tenants require oversize doors or compartments?
- What kind of door locks do you prefer to use for your tenant doors/compartments? (standard is 5-pin cylinder cam lock)
- What type of door (tenant) identification do you want? (standard: clear plastic name/number slots) Engraving available for an additional charge.
- Are there wall space restrictions where you plan to mount the horizontal mailboxes?
- Do you want any parcel locker(s) to accept packages built into your units? (USPS recommends 1 per 25 tenants)
- Do you want any outgoing mail receptacle or collection box(es) for outgoing mail built into your units?
Contact National Mailboxes’ customer service center for more product information at 1-800-676-5161.
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Custom Horizontal Mailboxes – H1450 & H1550 Series |
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Downloads:
Multi-Unit Mailboxes FAQs:
- What Are Multi-Unit Mailboxes and How Do They Work?
- Can I Customize Multi-Unit Mailboxes?
- Can My Commercial Property Use Multi-Unit Mailboxes?
- What Are The Benefits of Buying Multi-Family Mailboxes?
- What Are the Requirements for Multi-Unit Mailboxes??
NOTE: Standard Horizontal Mailboxes are USPS Approved ONLY for Replacement of Existing Wall Mount Mailboxes


















