Description
High-security Commercial Horizontal Mailboxes Made in the USA

H4C11D-19: Redefining Efficiency in High-Density Mail Management
National Mailboxes presents the H4C11D-19, a game-changing addition to their secure delivery solutions. This innovative 11-high wall-mounted unit, featuring 19 tenant doors and an outgoing mail slot, revolutionizes mail handling in space-conscious multi-tenant environments. Proudly crafted in the USA, this system embodies the perfect balance of capacity and compactness.
Optimizing Vertical Real Estate: Shatter the constraints of limited wall space. The H4C11D-19 maximizes every vertical inch, offering unparalleled efficiency in mail distribution for high-occupancy buildings.
Dual-Function Mastery in Sleek Design:
- Surpasses USPS STD-4C requirements, ensuring top-tier security in a streamlined package
- 11-high configuration with 19 tenant doors optimizes mail flow in moderate-height spaces
- Blends seamlessly with modern architectural aesthetics, enhancing overall building design
Adaptability for Evolving Urban Needs: From contemporary apartment complexes to bustling office hubs, this unit effortlessly meets diverse mail handling demands in environments where space optimization is key.
Championing Accessibility in Compact Spaces: Engineered to exceed Fair Housing ADA standards, the H4C11D-19 ensures universal access without sacrificing capacity or security.
Seamless Integration for Forward-Thinking Developers: Property managers will appreciate the unit’s versatile wall-mount design, ideal for both new constructions and renovation projects aiming to maximize efficiency in limited spaces.
Pioneering Mail Solutions for Modern Living: Embrace the future of streamlined communication. The H4C11D-19 isn’t just a mailbox – it’s a testament to efficient, accessible, and compliant urban living in compact settings.
Innovation Within Spatial and Regulatory Boundaries: While optimizing every inch, this unit adheres strictly to all USPS and building standards, ensuring a future-proof solution for even the most challenging multi-tenant spaces.
Investing in the H4C11D-19 means choosing a system that prioritizes efficiency, security, and domestic craftsmanship in a compact yet high-capacity form. Experience the evolution of commercial mailboxes designed for space-conscious, high-density environments. Whether you’re overseeing a modern residential complex, a reimagined office space, or a mixed-use development where every square foot counts, this unit is engineered to exceed expectations and streamline your mail operations while ensuring compliance and accessibility for all tenants.
Unit Size: 40-3/4″H x 31-9/16″W x 17″D
Total Doors: 19 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:
- H4C11D-19 Cut Sheet
- 4C Wall Mount 11-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
- Standard Style High Security Cluster Box Units (CBU) – USPS Approved
Similar 4C Horizontal Wall Mount Mailboxes:
- 19 Tenant Doors with 2 Parcel Lockers – 4C Wall Mount Max Height Horizontal Mailbox Unit
- 20 Tenant Doors with 1 Outgoing Mail – 4C Wall Mount 11-High Horizontal Mailbox Unit
- 18 Tenant Doors with 1 Outgoing Mail – 4C Wall Mount 10-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?





















