Description
High-security Commercial Horizontal Mailboxes Made in the USA

H4C13D-24: Pioneering High-Density Mail Solutions
National Mailboxes introduces the H4C13D-24, a revolutionary addition to their secure delivery portfolio. This innovative 13-high wall-mounted unit, featuring 24 tenant doors and an outgoing mail slot, redefines mail management in high-occupancy urban environments. Proudly manufactured in the USA, this system exemplifies the perfect fusion of capacity and vertical efficiency.
Elevating Expectations in Vertical Design: Shatter the constraints of traditional mail distribution. The H4C13D-24 harnesses vertical space with unparalleled ingenuity, offering a comprehensive solution for diverse tenant needs in rising urban landscapes.
Dual-Function Excellence in Towering Form:
- Surpasses USPS STD-4C requirements, delivering fortress-like security in a sleek package
- 13-high configuration with 24 tenant doors optimizes mail flow in vertically-oriented spaces
- Seamlessly integrates with contemporary architectural visions, enhancing building aesthetics
Adapting to the Pulse of Urban Evolution: From soaring residential complexes to dynamic corporate hubs, this versatile unit effortlessly meets the demanding mail handling needs of today’s rapidly densifying cityscapes.
Championing Accessibility at New Heights: Meticulously engineered to exceed Fair Housing ADA standards, the H4C13D-24 ensures universal access without compromising on capacity or security, even in its impressive stature.
Seamless Integration for Visionary Developers: Property managers will applaud the unit’s adaptable wall-mount design, perfect for both groundbreaking high-rises and ambitious renovation projects aiming to maximize vertical efficiency.
Redefining Communication Hubs for Tomorrow’s Cities: Embrace the vanguard of urban mail management. The H4C13D-24 isn’t just a mailbox – it’s a testament to efficient, accessible, and future-proof living in high-density environments.
Innovation Within Regulatory Frameworks: While pushing the boundaries of vertical design, this unit strictly adheres to all USPS and building standards, ensuring a lasting solution for even the most ambitious multi-tenant projects.
Investing in the H4C13D-24 means choosing a system that prioritizes versatility, security, and domestic craftsmanship on an unprecedented scale. Experience the next evolution of commercial mailboxes designed for the vertical city. Whether you’re overseeing a towering residential complex, a cutting-edge corporate center, or a visionary mixed-use development, this unit is engineered to surpass expectations and revolutionize your mail operations while ensuring compliance and accessibility for all tenants in our ever-growing urban landscapes.
Unit Size: 47-3/4″H x 31-9/16″W x 17″D
Total Doors: 24 Tenant Compartments
Tenant Compartment Sizes: 3-1/4″H x 12″W x 15″D
Outgoing Mail Compartment: 6-1/2″H x 12″W x 15″D
Colors: Antique Bronze, Black, Dark Bronze, Gold Speck, Postal Grey, Sandstone, Silver Speck, and White
Product Features:
- NOT USPS Approved (Local Post Office Approval Required-Due to No Parcel Locker Compartments for Packages which is a NEW USPS Postal Requirement))
- Front Loading Horizontal Style
- All Tenant Locks and Keys are Included
- Superior strength, corrosion resistance, and exceptional durability for indoor AND outdoor installations
- Tenant doors include heavy duty, dustproof cam locks each with 3 keys
- Parcel Locker doors include heavy duty dustproof lock with 3 keys which secures the collection bin until pickup is made
- Includes one outgoing mail compartment with slot, anti-fish comb for security, and protective hood
- Tenant Door Identification options include Standard Number Plates, Custom Number Plates, or Custom Engraved Numbering (Increases Lead Time)
- Made of heavy gauge aluminum
- USPS Approved to STD-4C regulations required for all new construction and major renovation projects
- 4C standard mailboxes are fully-recessed for in-wall mounting. Surface-mount collar and kiosk kits are available at an additional charge.
- USPS regulations require a minimum of one parcel locker for every ten tenant compartments and one outgoing mail slot per unit
- Factory installed integral trim surrounds mailbox and unique MUCK (multi-unit connector kit) included for easy installation of multiple 4C mailboxes
- Minimum wall depth of 17″ required for Fully-recessed 4C mailboxes
- Please Note: This large commercial mailbox is made to order and is non-returnable
Downloads:
- H4C13D-24 Cut Sheet
- 4C Wall Mount 13-High Suite
- 4C Wall Mount Units Installation Manual
- 4C Surface Mount Collar Installation Manual
- Care and Cleaning
- Sustainability & Leed
- Warranty
Related Top Selling Commercial Mailboxes:
- 16 to 29 Tenant Door Freestanding Depot Enclosure with 4C Horizontal Mailboxes
- Classic Decorative Style Cluster Box Units (CBU) High Security
Similar 4C Horizontal Wall Mount Mailboxes:
- 26 Tenant Doors with 1 Outgoing Mail – 4C Wall Mount 14-High Horizontal Mailbox Unit
- 22 Tenant Doors with 1 Outgoing Mail – 4C Wall Mount 12-High Horizontal Mailbox Unit
- 28 Tenant Doors with 1 Outgoing Mail – 4C Wall Mount 15-High Horizontal Mailbox Unit
4C Mailboxes FAQs:
- Are 4C Mailboxes Easy To Install? A Comparison
- Are Any Types of Commercial Mailboxes Being Phased Out?
- Are There Special Requirements for 4C Mailboxes?
- What are NEW Freestanding Depot Enclosures with 4C Horizontal Mailboxes?
- What Are 4C Recessed and Surface-Mounted Mailboxes?
- What Are the Benefits of 4C Mailboxes?





















