3-Large Door 4C Series Horizontal Parcel Locker Unit (Wall Mount, Max Height) USPS Approved (For Packages Only) – H4C16S-3P

H4C16S-3P 3-Large Door Horizontal Parcel Locker Unit (Wall Mount, Max Height) – USPS Approved for Secure Parcel Management

Modern Package Management for High-Density Properties

The H4C16S-3P 3-Large Door Horizontal Parcel Locker Unit from National Mailboxes delivers the perfect blend of security, efficiency, and accessibility for today’s package management needs. Proudly made in the USA and USPS-approved under STD-4C regulations, this wall-mounted unit is designed for high-density residential and commercial properties where secure, reliable delivery systems are a must.

With three generously sized compartments and a space-maximizing design, the H4C16S-3P brings modern functionality and long-term durability to new construction projects, major renovations, or retrofitting into existing 4C horizontal mail systems.

Downloads

• H4C16S-3P Cut Sheet
• 4C Wall Mount Units Installation Guide
• 4C Surface Mount Collar Installation Manual
• Care and Cleaning
• Sustainability & Leed
• Warranty

Maximize Vertical Storage and Streamline Package Delivery

Designed with a max-height configuration, the H4C16S-3P optimizes vertical wall space to handle larger and more diverse parcel sizes without expanding the unit’s footprint. Each compartment accommodates different package dimensions, making it ideal for properties dealing with an ever-growing volume of online deliveries.

The fully recessed, front-loading design promotes easy package retrieval for tenants while creating a seamless, uniform look within mailrooms, entryways, or delivery centers. Whether used alone or integrated with other 4C mail units, the H4C16S-3P supports efficient mailroom operations and enhances overall building organization.

Built to USPS Standards and ADA Accessibility Requirements

The H4C16S-3P surpasses USPS STD-4C requirements for security and parcel locker ratios, providing a compliant, dependable solution for multi-tenant package management. It also meets Fair Housing ADA standards, ensuring that all residents and users can access deliveries easily and equitably.

Crafted from heavy-gauge aluminum and finished to withstand corrosion, the H4C16S-3P performs reliably in both indoor and outdoor installations. Designed to resist daily wear, environmental factors, and heavy usage, it offers a long-term, maintenance-friendly solution for high-traffic areas.

Each door is secured by a heavy-duty dustproof lock, and three keys are provided per compartment to ensure peace of mind for both property managers and tenants.

Versatile Applications for Residential, Commercial, and Mixed-Use Buildings

From luxury apartment towers to expansive office campuses, the H4C16S-3P adapts easily to a variety of high-density environments. Its modular design allows it to be installed alongside additional parcel lockers, outgoing mail slots, or standard tenant mailboxes, creating a cohesive and scalable mail delivery system tailored to your property’s unique needs.

Whether you are upgrading an existing facility or developing a new community, the H4C16S-3P provides a professional, durable solution to meet the evolving demands of modern parcel delivery.

Future-Proof Your Property with Secure, Scalable Parcel Solutions

As e-commerce growth continues to drive higher volumes of package deliveries, investing in high-capacity, USPS-compliant parcel lockers has become essential for property management success. The H4C16S-3P helps future-proof your building’s infrastructure by offering secure, efficient, and accessible package management solutions that improve tenant satisfaction and reduce operational burden.

Designed to integrate seamlessly with today’s best delivery practices, this unit supports your property’s long-term goals while enhancing its daily operational efficiency.

Product Specifications

Unit Size:
56-1/2″ H x 17-1/2″ W x 17″ D

Total Doors:
3 parcel compartments

Parcel Door Sizes:
• 1 Compartment: 15″ H x 12″ W x 15″ D
• 1 Compartment: 17″ H x 12″ W x 15″ D
• 1 Compartment: 20-1/2″ H x 12″ W x 15″ D

Available 4C Colors:
Antique Bronze, Black, Dark Bronze, Gold Speck, Postal Grey, Sandstone, Silver Speck, White

Minimum Wall Depth for Recessed Installation:
17 inches

Product Features

Front-loading horizontal style for easy carrier access and tenant retrieval
Heavy-duty dustproof locks with three keys provided per compartment
Convenient and secure parcel delivery system designed to match 4C mailboxes
Superior corrosion resistance and durability for indoor and outdoor installations
USPS Approved to STD-4C regulations for all new construction and major renovations
Fully recessed, in-wall mounting with factory-installed integral trim
MUCK (multi-unit connector kit) included for seamless multi-unit installations
Optional surface-mount collars and kiosk kits available at additional cost
Attractive silver numbered placards included for clear tenant identification
Constructed from heavy-gauge aluminum for maximum strength and security
Parcel locker ratios fully compliant with USPS requirements (one locker for every ten tenant compartments)
Please note: this parcel locker unit is made to order and non-returnable

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Similar 4C Horizontal Wall Mount Mailboxes

• 3 Door Parcel Locker – 4C Wall Mount Horizontal 15-High Unit
• 3 Door Parcel Locker – 4C Wall Mount Horizontal 14-High Unit
• 4 Door Parcel Locker – 4C Wall Mount Horizontal 9-High Unit

Parcel Locker FAQs

• Are Parcel Lockers Good For Apartments and Other Communities?
• Are Parcel Lockers Useful For Universities and Workplaces?
• For USPS Delivery, What are the Guidelines for Parcel Lockers?
• How are Parcel Lockers installed and how much do they cost?
• What Are Parcel Lockers And How Do They Work?
• What Types of Parcel Lockers Are There?